Grand Union CrossFit^®

Fantastic experience: I have been to a handful of CrossFit gyms over the last 8 years and Rob and Jenna at Grand Union CrossFit have been my favourite coaches to work with. They take the time to engage with everyone and I've enjoyed being a part of this gym more so than any other. If you are new or experienced with CrossFit I would recommend Grand Union.

Fantastic experience: Fantastic CrossFit gym and welcoming community. Since joining last year my fitness and strength have come on leaps and bounds. Great facilities and brilliant coaches who have helped build my confidence and foster a can do attitude. I wholeheartedly recommend Grand Union. My daughter also loves their CrossFit kids classes.

Fantastic experience: I joined Grand Union a year and a half ago and wish I had done so sooner! I had always been into fitness but had lost motivation over the years… GU completely changed that. Rob and Jenna are fantastic, supportive coaches and have created a very welcoming environment for all ages and abilities. I would definitely recommend joining.

Fantastic experience: Motivational exercise instructors who can tailor each session to your ability. Fun and getting fit at the same time. Thoroughly recommendable for all ages.

Fantastic experience: Rob and Jenna have built a brilliant community of like-minded people. I was a bit apprehensive not being, what I would consider, a CrossFit person - being well into my 50's! But as soon as I got there Rob and Jenna couldn't have been more supportive and encouraging. Pushing but always within your limits. They now run more gentle classes beyond CrossFit. If you're unsure I would definitely give it a go.

Fantastic experience: Joined last summer as a CrossFit newb, Rob and Jenna immediately made everything feel approachable and never intimidating. It was clear from the start that they truly care about their members, their energy and support make me look forward to every session. Highly recommend for anyone, no matter the skill level. There’s always the opportunity to scale workouts while being motivated by more advanced members around you. 10/10

Fantastic experience: I joined GU over a year ago and have loved it ever since. The space has been upgraded, but the vibes have always been excellent. It’s a super welcoming place, and Rob and Jenna are great teachers, patient and attentive. Would recommend anyone looking to build strength and meet new people to join!

Fantastic experience: Superb gym, boasting two superb trainers. The atmosphere is always welcoming, just as the workouts are always rewarding and challenging - with Rob and Jenna on hand to provide motivation and guidance on how movements can be improved or scaled. Would recommend to anyone in the area, no matter where they are in their fitness journey.

Fantastic experience: I joined Grand Union with no cross fit experience and not knowing any other members, but have had an exceptional experience over the past year and a half. Jenna and Rob run the gym and sessions incredibly well and I always feel challenged and learning but not out of my depth. Would highly recommend to complete newcomers and experienced cross-fitters alike.

Fantastic experience: I bloody love it. Rob and Jenna are incredibly patient and supportive as someone who’s relatively new to the Olympic Lifts and various moves, keeping me safe and helping my form! The community and camaraderie is something special to be part of

Fantastic experience: Dropped into Grand Union CrossFit for around three weeks in October while visiting the UK and couldn’t have asked for a better gym experience. Huge shout-out to Rob and Jen, both were absolutely outstanding. The coaching was attentive, knowledgeable, and genuinely welcoming, making it easy to settle in even as a visitor. The programming was excellent: well-structured, challenging, and clearly thought through, with plenty of coaching focus on quality movement. Class sizes were spot on, big enough to create a great atmosphere but small enough that you still get proper coaching and attention. The facility itself is fantastic: clean, well laid out, and very well equipped. We loved our time training here and would recommend Grand Union CrossFit without hesitation to anyone local or dropping in from out of town. If we’re back in the area, this will be the first place we train. Plus the merch is banging.

Fantastic experience: A great spot for a drop in. Huge gym, clean equipment and knowledgeable coaches. Packed loads into an hour without it feeling rushed!

Fantastic experience: Fantastic gym run by great people. The coaching is always encouraging, supportive and, when needed, fierce. It’s, by far, the best gym I’ve been to and the only gym that’s ever managed to keep me motivated. And a lovely community to boot.

Fantastic experience: This is such a great gym, I would recommend to anyone. I have never been typically sporty and a gym goer as such, but I am working at my pace to improve session by session. Appreciate all exercises can be scaled accordingly, so it never feels too daunting. Everyone is super welcoming and supportive too, whatever your level of ability. Rob and Jenna are great trainers, their experience and care shines through.

Fantastic experience: Genuinely the nicest place to exercise that I’ve ever come across. Never thought I’d look forward to daily group-based exercise but here we are. Wholeheartedly recommend it as a welcoming, friendly and incredibly supportive place to anyone. Soooooo glad I joined. Life changing.

Fantastic experience: After not training for a few years after moving away from London. I am so so glad I signed up at Grand Union. Wonderful community, the coaches are lovely and always push me to do better and the programming is excellent too!

Fantastic experience: My husband and I recently moved to Berkhamsted and joined the CrossFit gym just over a year ago. I was a bit trepidatious as it's not the sort of exercise we have done much of before but it's been absolutely fantastic. Rob and Jen are so warm and welcoming, and genuinely are a amazing coaches. It's a tough but rewarding workout and we've both seen real change over the last 12 months. Maybe more importantly it's given us a great sense of community in a new town and introduced us to some great new friends.

Fantastic experience: Don’t think, just do it! You won’t regret joining. Rob and Jenna have built a wonderful community at this gym. No egos, just decent, warm and welcoming people. I always leave feeling better than when I arrived and I’m fitter than I have been in my entire life, it’s a no brainer.

Fantastic experience: Rob and Jenna have created something pretty unique at Grand Union. I started here a year ago and was new to CrossFit. I was instantly welcomed by a great group of people who make everything about this gym loads of fun. Rob and Jenna are motivational, calm and caring trainers who walked me through everything step by step (and stuck with me while I took a while to get it!!). I'm super grateful to them both for getting me feeling fitter and stronger than ever before. Genuinely the best gym I've been to by miles. Could not recommend more.

Fantastic experience: I can’t put into words just how fantastic this gym is! I joined just over a year ago as a total gymphobe petrified of joining a new gym having never done CrossFit before but from the second I joined I felt so welcomed and relaxed and it is now my most favourite place! The coaches Rob and Jenna are the nicest people who have honestly helped me so much with my confidence both in and out the gym and that’s all because of the community they have created within the gym and their caring friendly nature as individuals wanting you to succeed. I have had personal training sessions with Jenna for months now and couldn’t have asked for a better PT. Listening to what I want to achieve, knowing my strengths and weaknesses and creating fun but tough workouts that I always look forward to and in the process has help me loose 3 stone and fall in love with fitness again. I honestly couldn’t recommend a better gym to anyone looking to join

Fantastic experience: Hidden gem near Berkhamsted High Street. Great vibes, energy, and workout! Thanks to Rob, Jenna, and the community for the warm welcome. I'll be back and spreading the word.

Fantastic experience: Best gym I've ever been to. Of course there's the awkward moment when you walk into a class for the very first time when you join, but that soon goes as everyone is so welcoming. Never did I think that I would be learning (and absolutely loving) how to do a kipping pull up or enjoy some of the Olympic weightlifting as much as I do...let alone the WODs (workout of the day). Rob and Jenna are amazing coaches....they have helped me no end. Their focus on technique and doing things the right way is part of who they are. I love the classes and it's a lot of fun too, plus the music always adds to a decent atmosphere. Grateful to be a member and be part of the community at GU. Well worth taking a look.

Fantastic experience: Top gym! Great community, awesome coaches and classes at times of the day that I can get to. Five years later, I feel healthier, stronger and happier

Fantastic experience: Rob and Jenna have created something special at Grand Union with their bespoke classes and friendly but firm coaching styles, and I cannot recommend it enough.

Fantastic experience: Grand Union Crossfit is an amazing and inclusive gym. Rob and Jen have managed to create an amazing community within the gym, and the town itself. I always look forward to attending the classes, and also the social events that are organised outside of the gym schedule. I could not recommend this gym enough.

Fantastic experience: Jen and Rob are fantastic coaches and because the classes are small it feels like you’re getting personal training I joined around a year ago as a complete beginner and was made to feel really welcome. The structure of the programme means I’ve been able to see improvements across all the exercises over time and I’m feeling much fitter and stronger Best gym I’ve ever been too

Fantastic experience: This is the place to be! Been working out doing different things for a while but this place brings it all together... Beasting workouts, great atmosphere and the best coaches with Rob and Jenna! Love every session!

Fantastic experience: Absolutely the best gym in Berko town. Jenna & Rob push you hard but in a comfortable way. I'm running faster and pushing harder than I ever have. But most importantly - the music is great and everyone is so friendly!

Fantastic experience: Great community gym, top class programming, top level coaching and amazing people!

Fantastic experience: Grand Union is a super CrossFit gym with a relaxed atmosphere and a friendly and supportive bunch of people. The coaching is brilliant. Huge amounts of knowledge, endless encouragement and lots of focus on technique and form. I love being challenged and in every session that’s what I get…always leaving on a high! I’m comfortably pushed (within my limits) and encouraged by the coaches, Jenna and Rob, and there is always a scale for a movement if needed. Because of this, I’ve seen real measurable progress in the year I’ve been a member. Joining as a complete beginner, I was nervous - but this soon dissipated and my confidence grew quickly. I’m now doing movements I never thought I’d be able to do. So wish I’d joined sooner!

Fantastic experience: Great community gym, top class programming, top level coaching and amazing people!

Fantastic experience: If you are thinking of joining a gym, then do not hesitate to join this one! Having been a life long yo-yo exerciser, loving exercise but never being consistent (easily losing motivation to go to the gym and spending hundreds on gym contracts that I’d hardly use), that all changed when I joined GU four + years ago, a few months after having my first baby. I am the strongest and fittest I have ever been, thanks to Rob and Jenna’s brilliantly skilled coaching and programming. They have created a gym where everyone can thrive, no matter what their starting fitness level is, where you will learn new fun skills (never thought I’d be nailing a hand stand wall walk!) and make new friends. If this is what you’re after, then look no further.

Fantastic experience: Nothing but good things to say about GU. Coaches motivate, guide and make learning workouts fun and challenging all at the same time. The best thing is the classes cater to a massive range of abilities and development to really help everyone. Lastly, a really good bunch of people all round who make you feel welcome and part of the group. Would recommend to anyone.

Fantastic experience: Jenna is a brilliant coach, I've been working with her for over 2 years now and I'm in better shape than ever. Also, really lovely people, nice community. I would highly recommend!

Fantastic experience: Whether you’re new to the area, looking to change gyms or simply try CrossFit for the first time, Grand Union CrossFit is the place for you! I’m so happy that I joined this gym/community! Rob & Jenna have created something super special here, a proper little gem. Their classes are always full of likeminded and friendly people of all ages and abilities, with everyone encouraging everyone else, always. The classes are kept small and the coaching is so attentive. I feel like I’ve come on leaps and bounds since joining and its 100% down to their patience and coaching, always coming up with new ways to help you unlock new skills. I love the excitement of what the next cycle is going to bring and their varied timetable means I can make it to not only their CrossFit classes, but weightlifting and conditioning also. Making it to class is always a highlight of my day, CrossFit is good for the soul and GUC is my happy place! And if you needed yet another reason to visit/join.. their Merch is NEXT LEVEL! Go there and get the T-Shirt, you won’t look back! ‍♀️

Fantastic experience: Great CrossFit box where each session is clearly explained every time and can be scaled to suit your ability. Fantastic atmosphere and culture at GU, where anyone can start to see improvements depending on your goal. Highly recommend joining if you are looking for an alternative to the same old gym routines and some motivation.

Fantastic experience: If you want to feel included, encouraged and part of a community, Grand Union is the gym for you. All credit goes to Rob and Jen for the culture they have created. Nobody is judged for their abilities, everyone wants everyone to do better, and the place just has such a great vibe. Feeling fitter than ever thanks to GU. Just wish I’d started with GU earlier

Fantastic experience: I’ve been going to GU for almost 2 years now, and loved every second of it. Rocking up to a CrossFit gym initially can be a little intimidating but this is the most welcoming, fun place to train and there are classes for everyone. Rob and Jen are both brilliant, spotting even the smallest things that make the biggest difference. If you’re thinking about joining, do it!

Fantastic experience: I absolutely love everything about Grand Union Crossfit. Rob and Jenna are the most professional, experienced, motivational and inspiring coaches. They are so good at what they do, they make everyone feel welcome, any level, any age. I have learned so much, made progress I never thought I could and they have helped me build confidence. The community spirit here is unreal, everyone is so supportive and its such a positive environment to be in. I'd go every day if I could! Seriously addictive, fun and not to mention the awesome tunes that accompany the excellent workouts. I love the different cycles and seeing everyone making progress every session. I leave every session feeling stronger, I've had fun and have made some lovely friends. If you're thinking about doing Crossfit, just do it! It's the best thing I've ever done. Rob and Jenna are just so encouraging, supportive, they explain and instruct so clearly and make everyone feel comfortable. They are inspiring coaches and have built an amazing community. (I could go on and on!)

Fantastic experience: Grand Union CrossFit is life-changing! I have been a member for a year and the club has completely changed my perspective on training and fitness. Whilst CrossFit can sometimes appear intimidating, and for people who are very experienced, GU really does offer training for all abilities. The coaches Rob and Jenna fully support you to use different scales and reach your own personal best. There is always lots of fun along the way and you will see progress in so many ways. There are so many benefits such as feeling stronger physically, mentally and working out in a really fun, friendly and supportive group. I have tried many local gyms and never found coaching at the level GU offers- would encourage anyone to give it a go! If anything I wish I had known what a difference being a GU member would make much earlier!

Fantastic experience: Absolutely bloody love GU! More than just a gym, it’s a community; if you know, you know? Fantastic coaching, clever programming, friendly people, good vibes all round. CrossFit and functional fitness for everyone! Seen my fitness levels, strength and skills improve week on week. Love even more seeing the same on those around me at the gym. It really is a very special place and my only regret is not joining sooner! Don’t regret or wait, just do it and join!!

Fantastic experience: Great gym, the coaches are supportive of new members of all abilities, I’ve learned new skills and had challenging work outs in a fun atmosphere

Fantastic experience: I have never seen such an improvement in my fitness after joining a gym... My cardio health and recovery rate improved markedly within a month or so and I felt empowered enough to take on my first Hyrox at the ripe old age of 48. Rob and Jenna as coaches are the right mix of incredibly supportive, knowledgeable and motivational - and they really have the skills to back everything up! The community they have built at the gym is really something - no showboating here - just positive people working to make a difference to their health, mental and physical. What a team!

Fantastic experience: Grand Union CrossFit is one of the best gyms I’ve ever been to! GU has highly experienced motivational coaches who help you reach your goals with well planned programmes! Rob & Jenna are super welcoming and have created an amazing community filled with likeminded individuals of all ages and abilities and has proven that CrossFit really is for everyone (their music taste is also top tier too) I enjoy every class I attend and not only has my physical health improved but so has my mental health! Absolutely 100% recommend!!!

Fantastic experience: I could write books about how amazing Grand Union is! After years of enjoying fitness but not finding my place I really feel I belong at GU. Everyone is incredibly supportive and friendly and it really does feel like a family! Rob and Jenna are absolutely amazing, inspirational coaches, they really care about everyones individual journeys and make hard work feel exciting! Their great programming means anyone and everyone can join and feel they have achieved something in every class! Going to GU is my favourite part of the day, it not only makes me physically stronger but mentally stronger in day to day life! I could go on and on but if you are thinking of joining I couldn't recommend it enough!!!!!!!

Fantastic experience: The highest quality coaching and a positive atmosphere are two characteristics that come to mind when I think of Grand Union Crossfit. Small class sizes, unique programming and fantastic fellow members combine to create the perfect environment for physical and mental gains. Thanks GU team!

Negative experience: Awful staff specially owner girl, extremely unfriendly I have visited more than 60 crossfit clubs all around the world i never experienced such a bad welcome They asked to send them emails what they ignored- ridiculous Owners you need to improve your attitude towards new people even if they foreign

Fantastic experience: Been going to Grand Union CrossFit since it started. Never looked back! Great facility, friendly community and top class coaching. Would highly recommend.

Fantastic experience: Great gym! Rob and Jenna are brilliant coaches and always very supportive and encouraging

Fantastic experience: If you're looking for buff units, look no further. Just joking, GU is much more than a gym, it is a community. Most people who have joined in the last three years are now part of a wider social circle that is as well known for legendary parties, as it is for PBs and physical development (but there is a lot of that too). Rob and Jenna lead from the front, and they are as pateint as they are demanding.

Fantastic experience: I joined this gym when it first opened in July 2019 and haven’t looked back. I joined as a complete newbie to CrossFit, but Rob and Jenna coached me through all the movements with real encouragement and support. I’ve made some fab friends from the gym too! And to be clear, this is Jenna Nicholls (sister in law of Jenna who runs the gym. I married her brother and now have the same name. Yes, it’s weird ha!)

Fantastic experience: I joined GU 18 months ago after moving to the area. The classes continually push me to learn new skills and reach new goals. Rob and Jenna are encouraging, knowledgable and welcoming coaches. A great gym and a great community to be a part of.

Fantastic experience: I joined GU nearly 2 years and can honestly say best decision I ever made ! the change in me is noticeable to everyone , not just my physical changes ( but i have got very strong !!!! ) but the mental impact is something i never expected ! I am calmer, happier, sleep better and feel mentally stronger . I have set myself so many goals that I have gone on to smash and its feels great ! The difference with GU than other gyms is the people, Rob & Jenna are fantastic coaches and have created something unique , a family , a community where people support each other, root for each other ! I have made some dear friends here ...... as I said joining was the best thing I have ever done

Fantastic experience: I joined this Crossfit gym run by Jenna and Rob in May 2021 and I am so pleased that I did. I was out of shape after childbirth and lockdown, so the idea of joining a gym was daunting. I needn't have worried. The last 21 months or so have been the longest I have ever stuck to an exercise regime. The results are not only visible, but I also feel fitter, stronger and my core has never been this tight (thank you Jenna for introducing me to hollow holds). Classes are kept small in size, are varied and cater for mixed abilities, as long as you are willing to try your best. The coaches are knowledgeable, personable and clearly have a passion for their work. A further upside is that this gym, situated in the heart of Berkhamsted, has a strong social ethos which leads to a feeling of comradery amongst members; there is opportunity to socialise after training in the local amenities or join in on socials organised by the gym and make new friends. I am very happy I joined Grand Union Crossfit and can only recommend it.

Fantastic experience: Joining GU last year was the BEST thing I had done in a while. Rob and Jenna are both so knowledgable, supportive and encouraging. They believe in all their clients and really want the best for you. I have learnt so much in the last year and long may this continue. I wake up each day looking forward to that days session. Thank you GU!

Fantastic experience: Being older and a complete Gymaphobe the whole CrossFit thing was my worst nightmare, I went along in the very first few weeks “to help try out the sessions” been a member ever since. The motivation, coaching and patience Rob & Jenna have shown an old dog, has been second to none, on top of that the support from other members has been personally inspirational, I have been accepted and made some real friends! 100, 100% recommend! Thank you Rob & Jenna and all the amazing members Neil Redman

Fantastic experience: GU is a great gym to be a part of, Rob and Jenna are fantastic coaches and super knowledgeable. No matter what your fitness level or ability is, they cater for everyone. It's a great community to be part of. Great programming too - at GU they do 4-5 week cycles so you’re able to see your progress throughout! Can’t speak highly enough.

Fantastic experience: Grand Union is a really welcoming CrossFit gym with really friendly coaches and members. The programming is great, with structured cycles focusing on specific movements for 6 weeks. I have improved on everything since joining about a year ago - olympic lifting, gymnastics & general fitness. One thing I love is that the classes are really small so you don't feel ignored. Thank you Rob & Jenna!

Fantastic experience: I have been a member at GU for almost two years having not previously done CrossFit and cannot recommend it enough. Coaches Rob and Jenna genuinely care about everyone’s progress no matter what ability they are and it’s the first time I have gone to a gym and not only seen my own fitness improve but that of literally everyone around me. There is a great GU community and a fantastic positive atmosphere when you’re training. The class schedule is constantly being updated and is really varied and for the first time in my life I can say that I genuinely look forward to going to the gym!

Fantastic experience: I’ve been going to Grand Union for over 2 years now and I love it. I went to a regular gym for years and played sports all my life but since I was introduced to GCU after moving to the area I’ve realised what I’ve been missing and wondered why I’d never done it before. Rob and Jenna are excellent coaches and the sessions really challenge me every time. I’ve really noticed the difference in my form and technique allowing me to lift heavier and work at a higher volume than I’ve ever done before. I’ve learned new skills and got better at old ones, and I’ve competed in events doing things I’d never thought I’d be able to do. They’ve also created such an amazing community around Berkhamsted, and the gym has such a good vibe to it. It’s like working out with your mates every day.

Fantastic experience: More than just a gym! I have been at Grand Union CrossFit since they opened. I have never stuck to one form of training for long as I used to loose interest and find something new... until GU. I absolutely love the work outs, they are constantly changing and keeping me excited to return. They are very inclusive and make it suitable for all levels to push themselves. The gym is made even better by the amazing coaches, who take time in focussing on everyone individually and pushing us to improve. Last but not least the gym members are all so lovely and many friendships have been formed, making the many events they put on through out the year amazing!!

Fantastic experience: I joined GU 8 months ago and couldn’t recommend it enough. Having never done CrossFit before, Rob and Jenna taught me from the basics and made me feel welcome in any class! The community they have built is amazing and everyone is so lovely there that you can’t help but have a great time, even if there are burpees in the workout!

Fantastic experience: I have been going to Grand Union regularly since it first opened and how happy I am that it did! I had never done CrossFit before and was incredibly nervous but Rob and Jenna made me feel so at ease. They have created such a safe and supportive environment that I have never found before. They are much more than coaches and they make each and every person feel welcome. No matter if you’re a complete beginner or a CrossFit pro, they will always help with what is right for you and give you that extra push. I have moved away from Berkhamsted now sadly but I go back most weekends just to get a class in with them because I love it so much. What a place!!

Fantastic experience: This place is so much more than a gym, theres a genuine community spirit and everyone is welcoming regardless of your ability - staff and members alike. The programming and coaching (and music!) is fantastic, every cycle pushes you in new ways and Rob and Jenna are constantly switching things up to keep it interesting. There is a big focus on scaling to suit your ability, but pushing for constant progression. I started coming here back in 2019 when it first opened, to complement my cycling training. Since then, Rob and Jenna have supported me through some big life changes, helping me to navigate pregnancy workouts safely, return to exercise post-pregnancy and giving me the opportunity to continue to train and progress in the most supportive, fun and welcoming environment as a mum to two little imps. It means so much to me to be able to train at Grand Union, and I get a real buzz out of mastering new moves and making progress. Thank for the incredible energy you put in to this place, Rob & Jenna. Martha and Iris can’t wait to start working out, too!

Fantastic experience: Quite simply this is the only gym I have ever joined and actually kept going to! I've always been sporty but never into the gym, but this place makes you want to come back as its really great fun. The workouts are well planned and considered and take into account everyone's ability. Rob and Jenna are absolutely brilliant coaches and lovely people too. They take the time to make everyone feel welcome and the community is incredibly supportive. What's even better is that it's not all about working out as there is a great social side to the gym with regular meet ups and events in the area. 100% recommend you to give it a try.

Fantastic experience: Joined Grand Union CrossFit just over a year ago when I moved to the area and would highly recommend for anyone interested in taking up CrossFit. Jenna and Rob are incredible, they have created a gym full of energy, fun and community. As someone new to CrossFit, I felt welcomed immediately and they both have supported me to build confidence and progress my strength and technique. They offer a range of memberships and classes which is awesome to tailor your training towards your goals around a busy work schedule. I love their small classes and 6 week programming because you get personalised coaching and can easily track your progress! Highly recommend for anyone looking to push their fitness to a new level!

Fantastic experience: I have been going to Grand Union CrossFit for about a year now and it is the best gym, it is my favourite place to go to set me up for the day or unwind after work, I always leave feeling really positive. Rob and Jenna are brilliant coaches, I learn and improve something every time I go. Their programming is fun, varied and challenging and they also encourage everyone to do their best. Not only are they incredibility knowledgeable, they have created such a friendly community, and I’m so glad I am part of it. When I first joined everyone made me feel really welcome and that is testament to the environment they have created. They also really care and go the extra mile for every individual; I recently had an injury and they adapted every work out for me for about 3 months so I could keep on training. SIGN UP! You will not regret it.

Fantastic experience: I’ve been part of GUC for 3.5 years now and have to say it’s the best gym I have ever been a member of. I normally get very bored in gym classes but at GUC, every class is varied, engaging and you’re encouraged to track progress so you clearly see results. It’s a great workout- my fitness levels have improved massively but there’s also a big focus on technique and retraining bad habits in workouts to avoid any injuries. Rob and Jenna are incredibly knowledgeable, passionate about what they do and really care about helping people achieve their goals. They have built a friendly, all-inclusive community with regular social events, so it feels so much more than just a gym. Most importantly, they have impeccable taste in music and play the best playlists during every workout!

Fantastic experience: Crossfit isn’t a gym it is a community and Grand Union is an exceptional example of this. I started here 3 years ago after 2 years of crossfit experience. The smaller size of classes means you learn a lot from the coaches and really improve on technique. The programming is challenging but fun and achievable. The best thing is there is very little ego at GU, everyone is really lovely, friendly and encouraging as can be seen at the various competitions members sign up for. I would recommend anyone looking to improve their fitness levels to come try it, a decision you won’t regret.

Fantastic experience: I’ve been a member at GU for nearly 3.5 years, originally doing a drop in class once a week and very quickly building up to a full membership, visiting 4-5 times a week. The coaches are knowledgeable, patient and friendly; they care about all members and help them on whatever fitness journey they are on. Programming of every cycle is second to none. Time is taken to ensure technique and foundations are in place but also pushing you to strive and improve to hit PBs or your goals. The community built at GU has to be the best part and really speaks for itself. There is no ego here and it's the most welcoming atmosphere - if you’re new to CrossFit, want to try something new or looking for a fun place to work out then I couldn’t recommend it more!

Fantastic experience: Grand Union is more then just your local functional fitness gym. The coaches are genuinely passionate, highly experienced and they actually care. In a crowded market with too many options Grand Union sticks to it's values and absolutely nails it.

Fantastic experience: Joining Grand Union CrossFit has been the best fitness decision I have made in years!! Rob and Jenna have created a wonderful community with some of the best coaching I have ever experienced. The workouts are brilliant with great variety and so much support within a really friendly atmosphere. There’s never any judgement from anyone and I’ve made some lovely friends since I’ve joined. Add to this absolutely banging tunes to workout to. Sign up, you will not regret it!!

Fantastic experience: Surely one of the best reasons to live in Berkhamsted! Rob and Jenna have created an incredible, supportive and fun gym and community. I was new to CrossFit and had never kept up a gym membership for longer than 3 months before coming here…that was nearly 4 years ago and I’ve been coming to classes here 3 times a week ever since. I love how encouraging they are as well as knowing when to push you. The supportive environment and community are testament to Rob and Jenna’s personalities, hard work and passion for exercise. Just great for your physical and mental health - I love it!

Fantastic experience: I LOVE it here. I hadn't done crossfit before joining about 10 months ago and I can honestly say that I now love going to the gym and actually miss it when I'm on holiday! I'd never really tracked what I'd been doing at the gym before but the six week programmes and app make it so easy to see your progress. My strength and fitness has improved a ridiculous amount and I'm so much more confident and happy in my body than I was when I started. Rob and Jenna are so fantastic and have pushed me to do things I never would have attempted before. Everyone is super friendly and supportive and the small classes mean workouts can be adapted for all abilities, sizes, preggos, you name it, so it really is such an inclusive place. If you're not sure about joining, just join.

Fantastic experience: Great Box- Jenna and Rob are amazing, the workouts are tough and there's a great community feel to it. Wouldn't want to go anywhere else!

Fantastic experience: I never stuck to any sport in my life… until GU CrossFit…. Best coaches, who are kind, fun, push you. They created the most wonderful CrossFit community in Berkhamsted, exercising is fun and I have seen amazing results in my fitness.

Fantastic experience: Joining a couple of years ago was one of the best decisions I’ve made. I was always intimidated in conventional gyms and to be honest had absolutely no clue what I was doing! However with GU, it feels like a personal training session every time with small classes, one-to-one feedback and constantly varied cycles that have helped make me fitter and stronger than ever. Not to mention it has a great community aspect with friendly members and regular social events.

Fantastic experience: Amazing staff , amazing atmosphere. You never look back once you join there classes.

Fantastic experience: Great atmosphere really fun place to be , can’t wait to go back!!!

Fantastic experience: Great set up. Would definitely recommend.

Fantastic experience: A great initiative to produce the GU bingo throughout febuary lockdown. Very motivational, diverse and a great distraction from tough times.

Fantastic experience: Thanks to participating in a monthly challenge with the team, I feel fitter and stronger in just a few weeks. I have really enjoyed the motivational experience and would definitely recommend.

Fantastic experience: Absolutely lovely place to train with great workouts and supportive coaching. It’s a real community and has made my summer. ☺️

Fantastic experience: Great initiative during lockdown for the month long #GUBingo, even got fat lads like me off the sofa. Can we do it again in April please?

Fantastic experience: GU Bingo has been so much fun, Jen and Rob thank you, keep up the great work x

Fantastic experience: Sessions are well run, hard work and good fun! Great community :)

Fantastic experience: There's a wait list to join this box and for good reason. A really high standard of coaching, a great community of friendly encouraging and supportive members, challenging workouts that leave you buzzing at the end of a session and absolutely top tunes to workout to! Hard to beat.

Fantastic experience: Great gym: expert, helpful coaches, friendly atmosphere, welcoming community. I’m grateful to Grand Union for introducing me to Crossfit in such a supportive and challenging way.

Fantastic experience: Been to the gym a few times and loved it, can’t wait to join full time once lockdown is over, Rob and Jenna are great trainers, knowledgable and supportive. The members are all so inclusive and friendly too!

Fantastic experience: GU Bingo was a great idea for something a bit different during lockdown. A good range of exercises and challenges to suit and test all abilities. Coaches were fantastic

Fantastic experience: Rob and Jenna have created a real community at GU Crossfit. It's a great place to train, learn and meet new people. Thanks guys!

Fantastic experience: Even after a tough year Rob and Jen have done an amazing job keeping me active and engaged. I’ve always struggled with consistency when exercising and wanted to try something class-based; GUC do an amazing job of teaching the fundamentals to members unfamiliar with CrossFit in a friendly, fun and encouraging atmosphere. It gets tough at times but you’ll certainly see the results!

Fantastic experience: So glad I joined this place. The workouts by Rob and Jenna are great, they really know their stuff! The atmosphere and camaraderie of the members is what makes it so great, everyone wants you to do your best and push it that bit more each time. Can’t wait for the lockdown restrictions to lift so can get back in there.

Fantastic experience: I was lucky enough to be invited to join a team for the GU bingo throughout febuary lockdown. It’s been great fun, enjoyable and organised fantastically. Rob and Jenna are both very knowledgeable coaches and bring so much enthusiasm to what why do. Keep up the good work guys!

Fantastic experience: I took part in the Grand Union Bingo challenge during lockdown 3.0. Jenna & Rob generously put together this epic (but brutal!) challenge to keep their members and the wider community active whilst their box sadly had to be shut due to lockdown rules. I can’t thank them enough for all the effort that has gone into putting on such a great event - and if I lived closer would certainly be on the list to join Grand Union. Highly recommend this business and everything they stand for .

Fantastic experience: I was lucky to be a part of the Grand Union lock down 3.0 Bingo workouts. It was great motivation to kick start my new fitness goals for 2021 with varied exercises and great coaching via zoom. Bingo was a brilliant way to keep active and a brilliant distraction during this tough time.

Fantastic experience: For a man that hates exercise and loves ice cream I thought CrossFit wasn’t for me! However one month in I have lost the lethargy I used to have daily and now find it easy to get up and play with my son! I’m a new man! The coaches are excellent going above and beyond what I’ve had at my old gym, providing support and scaling options for a more rotund gentlemen. Which really made me feel welcome and part of the family! Thanks guys lm looking forward to the next month!

Fantastic experience: GU has a welcoming atmosphere and run with absolute passion by Rob and Jenna. Their programming and coaching is awesome but most importantly they’ve nurtured an excellent community!

Fantastic experience: I have been a member of GU from when it initially opened, and can honestly say that joining here was one of the best decisions I've ever made! I was always quite nervous in gyms, with not much self confidence or belief in what I could do; but GU has changed all of that, and I am now physically and mentally the strongest version of me! Not only that, Rob and Jenna have created such a welcoming community that shows support and encouragement for everyone, and from this I have made lots of friends along the way. The last year has been hard on everyone with the pandemic, but these guys have shown so much support for members and non members alike, with challenges to keep us busy over lockdown, as well as promoting support for local businesses in the area. So much love for GU and for everything it's about! <3 X

Fantastic experience: Ive been going to GU CrossFit for 18 months now and joining here was one of the best things I have done. It’s so much more than just a gym. Not only is Rob and Jenna ‘s programming is top level, making every class fun and challenging but the biggest part for me is the incredible community vibe they have going on down there and everyone leaves with such a buzz. #wearegrandunion✌️