True TRX classes with exceptional coaches and the friendliest, most motivating community in KC. You’ll get results without ever getting bored!

This place is incredible! The coaches are so knowledgeable, classes are challenging but can be adjusted for all levels, and everyone there is super supportive of each other. Great atmosphere and results!

This gym is different then the rest of the gyms I’ve tried going to to get in shape. They have a strong fit family that is caring, motivating and understanding of all goals, fitness levels, and even personal lives. What I love most about core strong is the fit fam that I have there, we’ll hang out outside of the gym and actually build friendships. It really feels like a second home and it makes living a healthy lifestyle and being in shape that much easier! I highly recommend at least trying CoreStrong Fitness at least once!

I’m new to TRX training, but with Mark Campbell’s guidance, I’m getting a good foundation. I’ve attended three TRX/Kettlebell workouts that were killer! Hated and loved every minute of them!

Love this so much!! TRX Straps have taught me so much and improved my overall wellness. I love every class Ive taken. Mark and Elyse have been wonderful 👏 . I hope more people find you.

Classes are great -- challenging, customizable, filled with variety, and effective. And the membership is a fantastic value, especially the more classes you attend of course. Finally, Mark does a great job not only leading and educating, but he provides individualized attention, tips, and alternatives. That makes a big difference for me and Im grateful for it and the results. Cant wait to get another month under my belt!

Core Strong is the perfect place to get hard, but fun sweat filled workout. I feel comfortable in the huge open air gym space which is nice right now. The coaches are knowledge and offer good variety and encouragement. I highly recommend.

Mark helped me get strong and fit for a climb to Mt Rainier in the state of Washington. Mark will motivate you and push you to become stronger and will give you the BEST advice on form and posture. The CORE strong family is also very awesome and welcoming!

An excellent class with Jeremy, highly recommend trying out their virtual timetable. It makes a difference to have someone watching you and pushing you to do your best.

These guys care about your well being! They are reasonably priced and care about the overall health of the people they train!

Really fun way to switch up a stale workout routine. Loved Mark & Jeremy - Really equipped to give you a GREAT workout! If you havent tried TRX yet, Id highly reccomend it, definitely my new favorite way to get my sweat on :)) With the circuit style, it moves fast!

Loved the experience definitely a must for all.....Ill be back!!

Great group of people

I have recently started my 2 weeks introductory offer, and already know I will be coming back for more once it is done. Mark and his team are pros, friendly, and *very* patient while youre still getting the hang of some moves. The workouts are hard and will make you sweat. Strongly recommend! Your core will thank you later!

I have been working out at CORE Strong Fitness for over a month now. Within the first month I have seen changes in my body and motivation. Mark is not only there to coach you through the workouts, but also there to help motivate you to change your body and mentality towards working out. He truly cares about each client and is there for anything you need. I look forward to going to the gym everyday. You will work hard but you WILL have fun!

Ive used ClassPass to visit CORE Strong Fitness and Ive loved them. Its a great facility, offers challenging workouts, and motivational coaches. If you are in the KC area I would recommend checking them out!

This gym is fantastic!! Extremely welcoming staff and environment. I had others in the class approach me and help me through the different exercises. Id never done TRX before and thought it was a great total body workout. I would highly recommend this gym for anyone looking for a welcoming, family-like feel.

CORE Strong Fitness has been THE most encouraging and goals-based gym I have ever been a part of. Mark and Stephanie are simply two of the finest individuals around. Not only does their physical strength and endurance show that they practice what they preach, but they are so good at passing the excitement of achievement on to others. All of their classes and programs are mixed with their positive outlook and encouragement.I have worked-out with trainers in the past and believe that Mark is one of the finest among them I have never been pushed so far, believed in myself so much, felt so strong, nor achieved such a high level of strength before. Because of these things, I will be a life-long supporter of CORE Strong!

This is the absolute best place to be. Not only did I do the 90 day challenge and lose 27 pounds, but I also learned how to do it the right way. Which means.. I’m still losing weight 3 months later, and I am continuing to feel good, healthy, and STRONG. Mark is amazing, he’s the best fitness coach I’ve ever had (and I’ve had quite a few). As a former athlete, I truly appreciate his balance between motivating and supportive. He knows his stuff which is awesome because you never have to question the process. I highly recommend trying this amazing facility. Love my CORE Strong family!

Core instructor, Mark, was exceptional with his guidance and encouragement. This class is exactly what I need as an aging woman. Highly recommended

This place is awesome. Workouts are killer, a great combination of strength, stretching and conditioning. Best part is the first time I met Mark he offered his phone and said, “if you have questions about fitness or nutrition call me or text me and I’ll help.” Who does that these days! Great place to be.

Before My first class, I was a little intimidated because I wasn’t Sure what to expect and hadn’t ever used TRX bands. I can honestly say it was such a fun experience. The circuits were a little hard to follow at first but other people in the class Are more than willing to help you even if your too shy to ask. They will notice you struggling and stop their circuit to assist you. The class instructor is also walking around to assist anyone having trouble or needing some extra guidance. All in all, I felt A strong sense of community from day one. I highly Recommend trying it out because now I’m addicted!

What do you want? A good total body workout? Do you want to push yourself to your limits? Do you want to train for the unknown? This all can be had in the Core Strong Fitness class. Yes, I said class. The workouts are setup such that you can really go at your own pace and get out of it what you want. Regardless of your fitness level, at the end of class, all had a great workout no matter what. A real community of non competition fitness and, dare I say it, just for the fun of it.Well worth trying out.

Love my experience at CORE Strong Fitness! Great workout, personalized classes, and a wonderful healthy living community. This gym is so much more than a facility to workout; it’s a family combined with transndous support! Goals are assuredly accomplished here. I will forever recommend CORE Strong to anyone!

I was in town for work and chose this location to get in a good workout.It was a very good experience. Mark is knowledgeable and friendly and constantly encourages you throughout your workout.

Love this place!!. CORESTRONG is the best thing that could have happened to me for getting back in shape. Ive worked out in the gym for most of my life. After being away for the gym for a few years I decided to try something different, something that Ive never done before..and i was glad I did.Mark is the best coach Ive ever had. Hes such a great motivator and his attention each persons workout shows how much he cares. Working out with others has also helped me push myself even more. Give it a try. You will love it!

I have been working out at CORE Strong for over a year. Mark is awesome. He is motivating and fun and pushes you to try harder. His 90 day program helped me develop healthier skills and it pushes me to continue to progress! I definitely recommend checking them out!

Great workout, super challenging in a good way. The coaches give you the right amount of attention. Will come again.

Mark is always a wealth of knowledge and is extremely supportive of his clients. Quality over quantity is the motto at Core Strong, something that is taken for granted in today’s fitness circles. If you want lasting results, look no further than Core Strong Fitness.

Tough workout with great instructors. 10/10 would recommend.

Great workout the instructor was great explained all of the workouts and walked around to make sure you were doing them correctly. I will be back.

Elyse was such a gentle yet encouraging coach today!! These classes are challenging and exiciting for beginners and exercise veterans alike!

Great class!! The instructor is very attentive, always watching your form and giving you advice. You will get a good sweat

After being a runner all my life, I found recovering from knee surgery to be one of my biggest challenges. Mark helped my progress with his careful modifications and TRX strength training. As he observes your ability, he knows how to challenge you without regression.It feels great to be strong again!

I went to improve my upper body strength and got so much more. Ive been going for 8 months and continue to look forward to it every week. Our trainer, Mark, goes above and beyond to ensure a great workout. His knowledge and experience allows him to give each individual the best workout for their fitness level. Class is like getting together with family.

Awesome place. Great mix of Technology to supplement their knowledge of fitness and health. Looking forward to seeing my progress.

Even for a beginner like myself, the classes are accessible but still challenging. The coaches and everyone attending classes make it a positive and encouraging environment!

Mark is an amazing instructor and he is supportive in your personal journey to living a happy and healthy life. Everyone in class is friendly and encouraging. Each class is different, challenging and fun. So glad to be part of the CORE Strong Family!

Friendly coaches and athletes engage you with an always-changing, scale-able workout while helping you push yourself in a supportive environment.

Such a great place! Took a Friday morning class with Emily and it was a wonderful experience. Highly recommend!

Very friendly and welcoming. Great for people of all skill level. Definitely recommend!

The Ultimate full body workout. I was so nervous at first..I was certain I would look like a fool. I didnt!! Mark who is the coach is so passionate about what he teaches. You feed off of that and cant wait to get to another class. If you do get nervous with classes he does private sessions..however I have a feeling once you get the basics down youll be excited about joining the Core Strong family. Earn Your Better!!

We were in town for a Bachlorette Party and wanted to get in a sweat session before kicking off the weekend activities! Mark was very accommodating and we had so much fun and got in an excellent workout!

Mark was very welcoming and helpful in guiding/instructing each person during class!

Mark is thorough and encouraging at each class. I was a bit intimidated to try TRX but he makes everyone at all skill levels feel welcome.

Great people helping you get a great workout. There is so much knowledge in this gym that you cant go wrong.

Awesome Class !! really professional as well

Tried TRX after an injury to regain strength. Ive gained it back and then some! Mark is great. The workouts will always test new muscle groups. You WILL find muscles you never knew existed!

Huge space with any equipment you could need! Friendly staff and great workouts!

This was my first visit. Mark did a great job of evaluating my abilities and explained the process very well. Looking forward to the experience.

A great place to workout with an amazing community of support and encouragement.

Mark was such a welcoming and fun instructor, I am still feeling the workout a few days later... will definitely be back!

Attending CORE Strong has been a transformational experience for Tess and me..weight loss, added strength, more confidence in mind and body, fun and friends. Thank you coach Mark Campbell

Love coming here. Mark knows his stuff and genuinely wants to help you meet your goals and set new ones.

CORE Strong fitness has completely changed the way I workout and Im so much better for it! If you are looking for something that will strengthen your whole body, this place has got it! Mark Campbell is an incredible and well educated trainer and classes are so much fun! I was introduced to TRX suspension training when I set a goal to run my first half marathon. Within the first few sessions I could already tell a difference in my strength and my running. Injuries stopped holding me back and I started enjoying training again. I completed my race and continue to set new PRs for myself as I get stronger. I have done personal training as well as classes with Mark and both have been an amazing experience. No matter what goal you are trying to reach, CORE Strong Fitness will challenge you and encourage you to keep going while you learn new ways to get there! I seriously suggest trying it out!

Great, challenging workout. Definitely will come back for more classes.

This is such an amazingly supportive environment to work out in! And Mark works with you to make the work out work for you! I am so glad that I chose CORE Strong!

Great workout! Best in KC, workout is individualized to the results you want! I feel safe in Mark’s coaching!

Having gone 4 times now I feel like every time has made me want to go even more. Mark has been a blessing, he gives personal attention and is always there with an encouraging word. TRX is a great full body workout. I am coming from no exercise at all to enjoying myself doing TRX with Mark and anyone else who shows up. Its been a great experience. Give it a try, you wont be disappointed!

Mark is the Best! If you want a great workout Core Strong is the place to go!

Core Strong Fitness is great. You get a great workout with an awesome instructor.

As a trainer, Mark is at the top of his field. His classes are fun, engaging, and educational. Definitely worth trying out.

TRX quickly became my favorite way to exercise because Mark is an excellent coach and encourager. He helps you get the correct form so you can get the most benefit from your time at Corestrong. I love being a part of the Corestrong family!

Love this place, its the only gym I will use!

I cant say enough wonderful things about Mark (Core Strong Fitness) and his TRX training! As someone whos been altletic my whole life I can honestly say this is the most fun, team spirit, complete body, insane results type of work out Ive ever done. Dont get me wrong, you EARN IT, but its a very encouraging atmosphere and Marks extensive knowledge of the body, muscle groups and even diet (my husband and I do his 90 challenge/diet and have seen INSANE results, all while still eating great foods!) is worth so much more than you could ever pay. Knowing him and being a part of the core strong family has been life changing. The least you can do is check out a class and I encourage you to comit to one month and see how your life changes!

COREstrong fitness is incredible. Mark knows his stuff and if its results you want, this is the place.

TRX instructer is awesome!

Another great class! TRX FIT gets you sweating while focusing on your CORE.

I am always glad I made the effort to take TRX class. 😊

Great workout with amazing and supportive people!

Best classes in the city!

A fantastic workout!

I love it!

Great workout!