CORE Strong Fitness
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CORE Strong Fitness
These ALL TRX based class is guaranteed to make you sweat and get STRONG! Strength training using your body weight as resistance will not only develop strong, more toned arms, legs, and back, but a ROCK SOLID CORE! Workout with us from ANYWHERE! Grab your TRX and jump onto a class with us from the comfort of you home or on the road from your hotel room.

This is the future of training. Come be apart of the CORE STRONG community! Mark Campbell is a NSCA Certified Personal Trainer since 2008, he is the First Certified BLACK Rank TRX Training Coach in the Midwest and currently holds the highest level of education offered through TRX, is FMT Level 1 Certified through RockTape, Theragun Master Trainer, Certified Barefoot Training Specialist though EBFA, Precision Nutrition Level 1 coach, and Performance Climbing Coach.
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We want to make you feel Welcome from the very first step through our doors. Not only are the coaches making sure your feel comfortable with the workout before class, but our amazing CORE Strong Family makes you feel like you fit right in! We make our classes Fun while getting a great workout. We want you to be able to work hard AND have fun so you want to keep consistently coming, working towards your goals.
These classes are HIGH Metabolic, FAT Blasting, Muscle building workouts guaranteed to get you results! Built on Foundational Movements using TRX, Kettlebells, Sandbags, Battle Ropes, Medicine Balls, TRX Rip Trainer, and Bodyweight! Whether your goals are to feel BETTER, move BETTER, have MORE energy or LOSE weight, our certified Personal Trainers are eager and passionate about helping you make those goals into reality!
Mark Campbell is a NSCA Certified Personal Trainer since 2010, he was the First Certified BLACK Rank TRX Training Coach in the MidWest and recently became a TRX Master Trainer. If you've found yourself here, it means you've taken the first step, or you're looking for BETTER than the results you're seeing now.
This class is a HIGH Metabolic, FAT Blasting, Muscle building workout guaranteed to make you sweat! Built on Foundational Movements using TRX, Kettlebells, Sandbags, Battle Ropes, Medicine Balls, TRX Rip Trainer, and Bodyweight! This ALL TRX based class is guaranteed to make you sweat and get STRONG!
Can't make it to the gym but still want to get a great workout in with expert coaching and accountability? Our LIVE Virtual TRX classes are just what you are looking for! We stream LIVE TRX classes daily from our gym to your home so you can workout from the convince of your own home without the sacrifice of coaching and being apart of hard working group!
Reviews (10)
Brandon Allen
Brandon Allen
Dec 01, 2021
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Positive: Communication, Professionalism, Quality
KC TRX is legit! The coaches are friendly and knowledgeable.
This was my second experience with TRX but I be will be continuing from here out. Thankful I stumbled upon these workouts.
Laura Johnston
Laura Johnston
Nov 05, 2021
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Positive: Communication, Professionalism, Quality
Best TRX workout you will find! Amazing space. Knowledgeable coaches. Welcoming community! 10 out of 10 would recommend anyone to Mark and the CoreStrong community!
Heather Pluard
Heather Pluard
Aug 19, 2021
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Positive: Communication, Professionalism, Quality
True TRX classes with exceptional coaches and the friendliest, most motivating community in KC. You’ll get results without ever getting bored!
Rebekka Hepford
Rebekka Hepford
Jul 29, 2021
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Positive: Communication, Professionalism, Quality
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!
Christian Campbell
Christian Campbell
Jul 28, 2021
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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!
Paul Hutchings
Paul Hutchings
Jul 26, 2021
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Positive: Communication, Professionalism, Quality
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!
Jon Coleman
Jon Coleman
Dec 18, 2020
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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 I'm grateful for it and the results. Can't wait to get another month under my belt!
Amy Kanning
Amy Kanning
Nov 24, 2020
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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.
Kyle Rainey
Kyle Rainey
Oct 29, 2018
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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!
Marco Toapanta
Marco Toapanta
Jun 03, 2018
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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!