This place is awesome! I am new to CrossFit, and the coaches and members here are all great. Everyone is extremely friendly and welcoming and quick to help out. There's also a focus on form and safety. Can't recommend highly enough!

I have finally found a workout home at KJ Crossfit. The community here is amazing and very welcoming.

Mylena was the coach when I attended my first day of free trial. She was really great to walk me though each movement and modified the movements I couldn’t do yet. Will be going back!

KJ has been such a blessing! Moving to Colorado I knew it would be tough to find a new gym even comparable to our “home” gym in FL. But KJ has some of the friendliest people, and coaches that take the time to get to know you. There’s a variety of classes, 7 days a week.

Feeling comfortable is very important wherever we are. The vibe here is very comfy.

What a wonderful community, owners and coaches! I felt welcomed in as a first time CrossFit’er and have been enjoying every workout since. Every coach is extremely knowledgeable and accommodating. I have been thoroughly impressed with how well all of the coaches accommodate varying levels of experience in their classes. Getting results and having fun doing it. Highly recommended!

The KJ CrossFit team is amazing. Great coaches! What I love most is it is good for all levels of people from beginner to CrossFit athlete. I have seen such personal improvement both mentally and physically!

Great gym, coaches who pay attention, so far (2 weeks) really enjoying the experience. Definitely check them out!

When I moved here and went to check out KJ CrossFit I was greeted right when I walked in and felt welcome immediately. I quickly discovered everyone there was welcoming and encouraging. Feels like family. I’ve been involved in CrossFit for 6 years and I’m picky about programming. Kristy and all of her coaches are extremely knowledgeable and talented. They know how to identify where you are in yo... More

When I moved here and went to check out KJ CrossFit I was greeted right when I walked in and felt welcome immediately. I quickly discovered everyone there was welcoming and encouraging. Feels like family. I’ve been involved in CrossFit for 6 years and I’m picky about programming. Kristy and all of her coaches are extremely knowledgeable and talented. They know how to identify where you are in your fitness journey and coach to that, not only in one on one PT, in classes too. I’ve learned, grown and improved on my many bad habits since I started working out at KJ. Thank you Kristy & Jeremy! Less

Such a welcoming place. Stopped in to do one of the open workouts and was blown away by how friendly they were. Everyone knew my name and were great about showing me around. Thanks for such a great atmosphere.

TL;DR: A great place to begin (or continue) a journey to a better life. I'm an older guy (50) with typical older guy problems and no history of playing sports or working out -- let alone CrossFit -- before starting at KJ in early 2021. I started at KJ to support my son as he ramped up for Navy boot camp. It's been over a year now and I'm at KJ four or five days a week, doing CrossFit, StrongFit... More

TL;DR: A great place to begin (or continue) a journey to a better life. I'm an older guy (50) with typical older guy problems and no history of playing sports or working out -- let alone CrossFit -- before starting at KJ in early 2021. I started at KJ to support my son as he ramped up for Navy boot camp. It's been over a year now and I'm at KJ four or five days a week, doing CrossFit, StrongFit (strongman/woman stuff), and Olympic Weightlifting. So I came here for somebody else, but stayed for myself. I'm still that older guy and this is still hard work, though. I scale workouts most days, but the coaches are ready with ideas for how to keep that challenging, and they drive me just as much as they do the amazing athletes that have been here a while. And that covers the community and the overall experience here -- we push and encourage each other, again and again, until it's over (for that day, at least) and we can't believe what we've accomplished. This sense of satisfaction started me actively thinking about how to align the rest of my life for better results. This led me to fix my diet and sleep habits, which in turn led to better workouts and opportunities beyond exercise that I couldn't have predicted. Now I'm in the best shape of my life and I'm not done, and I owe it to the people at KJ and one simple rule -- show up and do your best, whatever that is. If all that sounds like your thing, I recommend you come here and do what I did. As for my son, he's now a corpsman (medic) in the Navy, on his way to working with the Marines and a career in medicine. My daughter is headed for the Navy in four or five more years and is already joining me at KJ a few days a week. I can barely keep up with her sometimes, and I don't mind. Less

I was new to CrossFit when I started at this gym and I was super intimated to try the sport. The coaches and community at KJ are amazing. The coaches pay close attention to form and keeping everyone safe. For new movements, they take the time to teach and never made me feel silly for asking questions. Their support continues to push me to achieve new personal records in a fun and safe way. The re... More

I was new to CrossFit when I started at this gym and I was super intimated to try the sport. The coaches and community at KJ are amazing. The coaches pay close attention to form and keeping everyone safe. For new movements, they take the time to teach and never made me feel silly for asking questions. Their support continues to push me to achieve new personal records in a fun and safe way. The rest of the community there is supportive, inclusive engaging, and always cheering each other on! Such an amazing time. I have been going for over a year and a half and still LOVE it. It continues to be challenging and I am amazed at the results. Highly recommend!!! Less

KJ CrossFit has become one of my favorite places, the coaches have established a community where I automatically felt welcomed and cared for, we all bond over becoming our best healthy selves. I feel stronger and healthier and I thank the amazing and supportive coaches and members! I have seen a difference within myself (strength wise and my mentality) and that was made possible at KJ Crossfit. ... More

KJ CrossFit has become one of my favorite places, the coaches have established a community where I automatically felt welcomed and cared for, we all bond over becoming our best healthy selves. I feel stronger and healthier and I thank the amazing and supportive coaches and members! I have seen a difference within myself (strength wise and my mentality) and that was made possible at KJ Crossfit. I am so glad I committed to this gym and to this journey!! Less

From the first time I walked into this gym everyone has been welcoming and supportive. No matter how much modification and extra assistance I need the coaches are very attentive.

KJ CrossFit is an amazing place - excellent/highly knowledgeable coaches and a great community. I've been a member since 2016, and the boxes I belonged to before and have visited since don't compare. The coaches are great at tailoring workouts to every fitness and skill level, and all the athletes support and encourage each other. It's our second family, except sweatier.

KJ is such an amazing gym! All coaches are incredibly friendly and extremely qualified! They know how to push you in the best way possible during your workouts && you will never leave disappointed!

I don’t even know where to start. When I started at KJ to say I was out of shape is an understatement. I was coming from a pretty bad place in life with not any friends. And this place has changed my life! It’s been a little over four years, I am a completely new person! I owe so much of that to Kristy Bauer! All of the coaches there are great and I love you all! Thanks for everything!

The trainers at KJ Crossfit are some of the best trainers in the industry. They are very knowledgeable and do a great job of coaching/teaching everyone from new beginners to seasoned athletes. The environment is very encouraging and has a fun competitive nature. There is a strong emphasis on doing all lifts/movements correctly and safely, therefore, I have seen very few injuries. The community at... More

The trainers at KJ Crossfit are some of the best trainers in the industry. They are very knowledgeable and do a great job of coaching/teaching everyone from new beginners to seasoned athletes. The environment is very encouraging and has a fun competitive nature. There is a strong emphasis on doing all lifts/movements correctly and safely, therefore, I have seen very few injuries. The community at KJ is not like any other gym I've seen. The friends you create at KJ are lifelong friends. This is one of the best Crossfit gyms in Colorado! Less

KJ is not just a great and safe place to learn Olympic weightlifting, gymnastics, and other CrossFit moves - it’s a community. The owners, Jeremy and Kristy, have built a community that cares deeply for each other, supports each other’s goals, and is always there to cheer you on. This is true both inside and outside the gym. The coaching is top notch, the class selection is vast, and the membe... More

KJ is not just a great and safe place to learn Olympic weightlifting, gymnastics, and other CrossFit moves - it’s a community. The owners, Jeremy and Kristy, have built a community that cares deeply for each other, supports each other’s goals, and is always there to cheer you on. This is true both inside and outside the gym. The coaching is top notch, the class selection is vast, and the members you’ll get to know will become extended family. All shapes, sizes, and ages are welcome. One of the things I like best about KJ is the overwhelming support to scale a workout to ensure safety and the ability to workout again the next day. Less

We tried every gym in Boulder County it felt like and Kristy and Jeremy create an amazing environment to get fit. The coaching lineup is top notch! Olympic Weightlifting sessions are fire with several of the coaches having a speciality in those specialty movements. Skills classes are awesome, I always learn something new and am given appropriate drills for my current level. I always feel safe in ... More

We tried every gym in Boulder County it felt like and Kristy and Jeremy create an amazing environment to get fit. The coaching lineup is top notch! Olympic Weightlifting sessions are fire with several of the coaches having a speciality in those specialty movements. Skills classes are awesome, I always learn something new and am given appropriate drills for my current level. I always feel safe in what’s being asked of me in any workout and am challenged without being shamed for not having any particular skill. The community is first rate and have felt so welcomed! There are always fun activities and seasonal get togethers and the KJ crew make everything fun! I also really like that they respect peoples privacy. No crazy data use policies you have to agree to to be a member. If you ask not to be photographed they are really respectful. Look no further. This is your gym. Sign up here and never look back! Less

KJ Crossfit is an outstanding gym. The coaches are all experienced, dedicated and committed to providing athletes with the skills and encouragement to reach their performance goals. KJ also has an incredible sense of family that extends outside the gym. I would recommend KJ to all my friends!

KJ Crossfit is an awesome, welcoming place to work out and supportive of athletes at every level with personalized attention from the coaches and a family type atmosphere from the other athletes. The programming includes far more than just crossfit with gymnastics training, strict lifting, personal training and opportunities for nutrition programming. Highly recommend to anyone interested in be... More

KJ Crossfit is an awesome, welcoming place to work out and supportive of athletes at every level with personalized attention from the coaches and a family type atmosphere from the other athletes. The programming includes far more than just crossfit with gymnastics training, strict lifting, personal training and opportunities for nutrition programming. Highly recommend to anyone interested in becoming healthier and happier! Less

I have been a member of KJ since 2017, gotten into the best shape of my life, and met incredible people who have become dear friends. Kristy, Jeremy, and all of the coaches care so much about the well being of thier athletes. KJ is truly a special place in the Crossfit community.

KJ CrossFit is AMAZING! The instructors are helpful, attentive and encouraging. The other athletes are always supportive and fun. It’s a great environment all around!

I was extremely nervous about joining a CrossFit gym without any prior experience, but the entire community at KJ was so warm and welcoming that it made the decision to join the gym easy. The trainers are great at modifying workouts to fit individuals' needs and are super attentive and helpful when it comes to ensuring proper form. Great workouts, great variety of training, great team- highly rec... More

I was extremely nervous about joining a CrossFit gym without any prior experience, but the entire community at KJ was so warm and welcoming that it made the decision to join the gym easy. The trainers are great at modifying workouts to fit individuals' needs and are super attentive and helpful when it comes to ensuring proper form. Great workouts, great variety of training, great team- highly recommend. Less

I absolutely love this gym. I have been doing CrossFit for a few years and KJ is definitely above the rest. The programming is always fun (and challenging) and the coaching is on point. The community that this gym has created and actively encourages is completely priceless. It is absolutely more than just a plain ol’ gym membership.

Amazing coaches and fantastic community!!

My crossfit coach in Nevada said to try out this gym when I was in Firestone for a month. He was absolutely spot on... really good coaches who know their stuff and are constantly encouraging, clean gym, and tough workouts.... you can't ask for anything more!!!

The impact that KJ crossfit has had on my life is unbelievable. I came into the gym as a novice athlete. The coaching and support I have received to grow physically is unmatched compared to any other gym I have ever experienced. Not only are the coaches well-educated and pay special attention to each athletes’ technique, limitations, and adjustments that are needed; but they (and the entire gym c... More

The impact that KJ crossfit has had on my life is unbelievable. I came into the gym as a novice athlete. The coaching and support I have received to grow physically is unmatched compared to any other gym I have ever experienced. Not only are the coaches well-educated and pay special attention to each athletes’ technique, limitations, and adjustments that are needed; but they (and the entire gym community) are also the most supportive people you could have cheering on your accomplishments as you grow in your fitness career. I went from barely being able to handle a barbell to competing in a crossfit and Olympic Lifting competition, and striving to perform my best and grow in my workouts each and every day. Not only will KJ crossfit provide the space and support for you to be better physically, but you will also find a home here. I am proud to say that this amazing community has become my friends and my family. They have become a central consideration in my life and my days are significantly better when I walk through those doors. If you are searching for a place with an amazing community, full of genuine hard-working people, that will encourage you to be the best that you can be physically — then please come to KJ crossfit and see what it is all about. It has truly been one of the greatest blessings in my life. Less

This place is great. The community is really great. The instructors are great. The equipment is great. I always feel really welcomed and comfortable when I’m at KJ. I love to be at at KJ.

I joined KJ last August shortly after moving to Longmont. I was interested in the diversity of their programming. When I came to check it out was immediately greeted by Tyler and introduced to several members, signed a waiver and joined the gym and never looked back. Great environment, fun coaches overall a great place to workout, zero judgment zone.

KJ crossfit has made such a positive impact in my life! There is an incredible sense of community and belonging that is incomparable!! I’ve been able to modify workouts based on my needs and the coaches are incredibly helpful every single day. I look forward to every workout!! Highly recommend to anyone of any fitness level!!

Great gym with an inviting atmosphere! The coaches are knowledgeable and do a great job at creating a fun (and safe) environment. All fitness levels are welcome and anything can be modified! Not overwhelmingly big but not too small, it really is the perfect gym.

Great community of people who motivates you to keep pushing! I have been a member for a year now and i have nothing but love for this place.

Great programming and excellent coaches. Smaller CrossFit gym with a real community feel! Awesome variety of classes including gymnastics, StrongFit, and Olympic lifting.

KJ CrossFit has been a GREAT experience for my 15 year old son and I! We are new to the CrossFit community and we felt welcomed by the coaches and other athletes. The coaches are well trained, motivated, and enthusiastic about fitness. They all took the time to show my son and I the proper technique and mechanics. We loved it and wouldn't go anywhere else.

Awesome place love the coaches great community and friendly

KJ crossfit, programming and coaching is outstanding. You will find a variety of classes that will help improving your overall fitness and health. KJ is a great community with a mix of entry level to experienced athletes. I fully recommend this gym!

I started at KJ CrossFit in 2016. It was such an inviting environment it was hard to leave. All of the members were extremely welcoming and supportive of me as I learned and grew within the sport. Many years later I am very thankful to have found a home like KJ. I couldn't imagine going anywhere else to be a healthier me.

Great coaches and a super supportive community!

KJ Crossfit is amazing- highly recommend!

As many Coloradans are, I'm a transplant and finding a new gym upon moving to Colorado was very important to me. KJ is not only a gym but a community. They have professional and experienced coaches, a welcoming community and a great facility/equipment. The coaches care about each member and meet you where you're at. Two years later and I still feel so blessed to have found KJ.

I wasn’t sure about doing the CrossFit at first. Everyone at KJ made it a no brainer to stay. In my early 40’s and I’m stronger than I’ve ever been, feeling great. All thanks to the amazing coaching staff and the fantastic people that go to this gym. It’s a great community filled with fantastic people who are passionate about improving themselves, and it’s infectious. I can’t ever go back to a no... More

I wasn’t sure about doing the CrossFit at first. Everyone at KJ made it a no brainer to stay. In my early 40’s and I’m stronger than I’ve ever been, feeling great. All thanks to the amazing coaching staff and the fantastic people that go to this gym. It’s a great community filled with fantastic people who are passionate about improving themselves, and it’s infectious. I can’t ever go back to a normal gym. Less

Coaches, community, atmosphere are amazing!

I dropped in at KJ crossfit for the first time after moving to Colorado a week ago for a Saturday partner WOD. There wasn't one person in the gym that didn't come up and introduce themselves and chat with me! Everyone was so warm and welcoming, which is so nice as a newbie. I look forward to doing more classes here, and love that weightlifting and gymnastics are included in a membership. Great al... More

I dropped in at KJ crossfit for the first time after moving to Colorado a week ago for a Saturday partner WOD. There wasn't one person in the gym that didn't come up and introduce themselves and chat with me! Everyone was so warm and welcoming, which is so nice as a newbie. I look forward to doing more classes here, and love that weightlifting and gymnastics are included in a membership. Great all around gym! Less

This is the best gym there is. As a competitive athlete training for the CF games, I can confidently say that the coaches, support, training quality, and more is top notch. I will proudly sport the KJ name in Madison 2022!

great people, great class, great workout !! 🤟

Love love love this gym! The people are amazing and supportive. The coaches are informative and helpful. I had never done CrossFit when I walked in the door at KJ and I can’t believe it took me so long to try it. So happy that I found y’all!

The greatest, most supportive, loving community! Incredible coaches!!!

Amazing gym, amazing coaching, amazing community. Everyone is welcome here over and over no matter their ability or goals. The coaches will give modifications that are always appropriate for whatever injury you may have. Don't wait, come in now to get in shape, reach your goals, or fight/prevent injury!

Dropped in today, and had a great experience! Coaches were good, and the vibe was fantastic. Very friendly and welcoming community, which says a lot about what they’re doing at the box. Strongly recommend for a drop-in or if you’re looking for a new fitness home.

Best equipment and coaches anywhere !

Dropped in today while traveling through the area to get in 19.4. I barely made it in the door and had three gym members introduce themselves and welcome me. Even thought they had another class going on, one of the Coaches set up an area for me and was my judge. Been in a few “Meathead” boxes recently, and KJ CrossFit was a welcome surprise.

Wonderful gym with a thoughtful and professional coaching staff. I really enjoy the environment.

KJ crossfit is on a level of its own! I was beyond impressed how much knowledge this place throws at you every day and the coaches were genuinely concerned about your success. I am beyond thankful for the time they took with me to help to decrease my pain from a previous injury. I will definitely be back! Great people and killer workouts! Thanks guys!

I've been the newbie at several crossfit gyms in the past, but this one has by far been the most welcoming! Every single person introduced themselves to me and had loads of smiles in my direction throughout the class. The workout was killer as well. I'm so glad to have found my new crossfit home!

very welcoming, extremely knowledgeable. very passionate.

If you're a CrossFitter n- haven't done a StongFit WOD you're missing out. I love the programming, coach Kristi is awesome n- she pays attention to the details and your training needs! Fun and welcoming community.... I recommend. G

KJ Crossfit is a new generation of Crossfit. The programming and coaching reflects a refreshing new approach to maximizing general physical preparedness. The coaches dial it in for their athletes, providing insight into the way you move, identifying deficiencies and scaling your workout to your individual needs. Crossfit, Strongfit and Olympic Lifting makes for a powerful combination in becom... More

KJ Crossfit is a new generation of Crossfit. The programming and coaching reflects a refreshing new approach to maximizing general physical preparedness. The coaches dial it in for their athletes, providing insight into the way you move, identifying deficiencies and scaling your workout to your individual needs. Crossfit, Strongfit and Olympic Lifting makes for a powerful combination in becoming a well-rounded athlete and this box offers it all with an impressive attention to detail. Crossfit boxes are not created equal and this one is in a league of its own. Less

KJ Crossfit provides an involved, personalized experience, for all levels of Crossfitters. I came from a fairly large gym south of Denver, and Kristy/Jeremy Bauer made me feel at home instantly. The programming is fantastic, as its both challenging and rewarding, and their facility is top notch! This is the place to WOD in Longmont, CO! Hands down!

Amazing coaches who truly care about change lives! I couldn't ask for a better CrossFit community. Having to travel a lot for work I have been to many boxes, I am truly spoiled to have Jeremy and Kristy as my coaches. They care about all their members, they have created a true CrossFit family for all levels of athletes. If you ever thought about CrossFit I would hands down recommend KJ CrossFit!

Life changing. Excellent coaches and great community. Get stronger. You will be a better, happier you.

Kristy and Jeremy are supportive, knowledgeable coaches. The atmosphere at KJ is fun and welcoming. Love it!

Amazing and kind coaching. Great for newcomers and advanced athletes alike. Kristy's olympic lifting training is unparalleled and Jeremy brings so much energy and fun to each class. Great people and a great gym.

When you walk into KJ, you know the workout will be tough (but can be modified). Expect that the coaching will be on point, and know if something isn't right with a movement, both Kristi and Jeremy will do anything to fine tune it so you can get stronger. The programming is the best around without a doubt. I've witnessed new people walking into the sport, and in a short amount of time, they are ... More

When you walk into KJ, you know the workout will be tough (but can be modified). Expect that the coaching will be on point, and know if something isn't right with a movement, both Kristi and Jeremy will do anything to fine tune it so you can get stronger. The programming is the best around without a doubt. I've witnessed new people walking into the sport, and in a short amount of time, they are killin the workouts, lighting up the board. I've seen such great gains in myself and look forward to my workouts there everyday. I have recommended KJ to everyone and will continue to recommend everyone to join. Coaches are very welcoming and offer incredible support. Less

Kristy and Jeremy are great coaches and really want to help you reach your goals

This place is owned by a couple and they are amazing. They are fantastic coaches, that help you achieve your goals. If you are interested in crossfit this is an amazing place to train at.

This place, the awesome coaches and the people who go here motivate you to do your best in every workout. Every day is different and I love the constant change. My daughter and son workout here too and they have seen a significant difference in their strength and agility in their chosen sports. It is so rewarding, you must try!

Is a Great, Friendly, and professional to do Crossfit

Probably the best crossfit affiliate in Longmont. Two very knowledgeable coaches. One coaches while the other one trains with you just to push you to be better every time. Not to mention how fun and nice these two are. Most importantly, unlike some other gyms that are there to make profits only, they hire professional gymnasts from outside the gym to help us gain better forms and skills. Can't a... More

Probably the best crossfit affiliate in Longmont. Two very knowledgeable coaches. One coaches while the other one trains with you just to push you to be better every time. Not to mention how fun and nice these two are. Most importantly, unlike some other gyms that are there to make profits only, they hire professional gymnasts from outside the gym to help us gain better forms and skills. Can't ask for more. Less

KJ CrossFit is amazing. It is run by a fun married couple, they take the time to know their clients, to them you are not just a member you are part of the CrossFit family. Their coaches are motivating, encouraging, tough, and talented. They continue to push me to be the best CrossFit athlete I can be. I am newer to CrossFit and they are making sure I learn proper form and it is more then just... More

KJ CrossFit is amazing. It is run by a fun married couple, they take the time to know their clients, to them you are not just a member you are part of the CrossFit family. Their coaches are motivating, encouraging, tough, and talented. They continue to push me to be the best CrossFit athlete I can be. I am newer to CrossFit and they are making sure I learn proper form and it is more then just working out for me. They incorporate healthy eating, community , and honestly they make it really fun. I am challenged everyday I walk into the gym, but I always leave feeling like I accomplished something. I would recommend KJ CrossFit to anyone, both new to CrossFit or a seasoned athlete. No matter your skill level Jeremy and Kristy will push you to be better everyday! Less

I attended KJ CrossFit's opening day workout and it was a blast! The facility is great and Kristy and Jeremy have a positive, welcoming attitude. It is obvious they are both very passionate and knowledgeable about CrossFit and are looking to get others excited about it as well. Great gym, I will definitely return!

This gym is owned and operated by the BEST coaches! Jeremy and Kristy make me actually WANT to workout. Thanks you two and thanks for making an AWESOME CrossFit gym in Longmont!

The coaches are the BEST! In the first month, they have strategically targeted my weak movements and made them stronger. They know how to motivate in a friendly but strong way which has kept me actually WANTING to keep working out. Thanks for bringing this awesome Crossfit gym to Longmont!

These are two coaches that care about each and every client's goals individually. I was inspired by Kristy Bauer to try crossfit almost a year and a half ago and have stuck with it ever since. I saw how much it transformed her and Jeremy's life in such a positive way and I wanted to be apart of it. Whether you are new or experienced in crossfit, they will help you to reach all of your fitness goa... More

These are two coaches that care about each and every client's goals individually. I was inspired by Kristy Bauer to try crossfit almost a year and a half ago and have stuck with it ever since. I saw how much it transformed her and Jeremy's life in such a positive way and I wanted to be apart of it. Whether you are new or experienced in crossfit, they will help you to reach all of your fitness goals as if they were their own. Two thumbs up! Less

This CF gym is managed by experienced and dedicated CF trainers! Their mission is to ensure that all CF enthusiasts receive the best workout possible with the best possible outcome! 100% dedication!