TRX CLASSES Join Now to starting earning your RESULTS! JOIN NOW Virtual TRX Classes Train with us from anywhere! Now streaming LIVE TRX Classes! Sign up Here Personal Training MADE PERSONAL At CORE Strong Fitness your goals are the focus! Personal training will help you reach those goals FASTER! LEARN MORE core90 challenge Lose up to 40 lbs and 4 inches in 90 days with the CORE90 Challenge SEE THE RESULTS
In Studio

TRX Classes

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!
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Virtual

Virtual TRX Classes

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!
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lose up to 40 lbs & 4 inches

CORE90 CHALLENGE

Lose weight fast and keep it off with the CORE90 Challenge. It’s a proven system that gets results without diets, pills, and other gimmicks! Take back control of your heath today! Don’t let one more day pass feeling out of control.
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MORE THAN A ``Trainer``

Head Coach & Founder

Mark Campbell, owner and founder of CORE Strong Fitness.

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.     

Mark graduated from Graceland University with a degree in Wellness Program Management, worked at a physical therapy group for 2 years teaching aquatic exercise classes for the Wellness Program, and worked as the Movement Coach at CORE Wellness Institute in Lee’s Summit, MO.

Mark is highly passionate and motivated to help others reach their Better through movement and health. When not coaching clients or coaching classes he enjoys rock climbing, yoga, and spending quite time with his wife and dogs.

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Mark Campbell, CPT, TRX Black Rank

EARN YOUR BETTER

Pricing

DROP-IN CLASS

$25

Multiple Class Options

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Drop In and check us out

Bring a Friend

Feel apart of the family

UNLIMITED

$150

ARE YOU READY TO MAKE A CHANGE?

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Unlimited access to ALL Classes

Private Facebook Group

FREE CORE Strong Fitness Blender Bottle

THE CORE90 CHALLENGE

$495

Are you seeking transformation?

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Lose up to 40 lbs

Lose up to 4 inches

Includes:

Nutrition Guide and Coaching

MyZone Heart Rate monitor

4 InBody Body comp analysis

FIT Tests

Movement Screen

3 Month Membership

PrivateFacebook Challenge Group

CORE Strong Fitness Blender Bottle

Pushing Your limits

JOIN THE CORE STRONG FAMILY

Request a free One on One consultation

If you’ve found yourself here, it means you’ve taken the first steps to Looking, Feeling and Moving Stronger!

Simply drop your name and email below to get what you came for: Results, community, expert advice and more.

You’ve waited, contemplated and possibly tried every easy way; you’re worth more than that.

Become the best version of YOU.

It all starts somewhere – it might as well be here.

See you inside – come EARN IT.

    WHY CORE STRONG?

    Class Options

    CORE Strong Fitness offers a wide range of classes to meet your needs, schedule and goals. From TR-Xpress 30 minutes classes to TRX Strong, all classes are designed with YOU in mind.

    FOUNDER

    Mark Campbell is the FIRST, certified Black-Level TRX Coach in the Midwest. In addition to his many various certifications, you won’t find another coach or trainer in Kansas City who cares about you and your progress like Mark does. He has dedicated his life to building CORE Strong Fitness, the ONLY TRX based gym in Missouri.

    MORE THAN JUST A GYM

    Unlike most other gyms or fitness studios we TRULEY care about you! We have HIGHLY skilled and qualified coaches that make your experience the center of the class not just the workout. We are family and we have a strong community of like minded supportive individuals from all walks of life.

    News

    May 28, 2020
    Why Suspension Training Is The Best Strength Workout For Climbers

    Suspension training is one of the best rock climbing workouts to build strength and stability. The TRX or Total Resistance...

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    October 10, 2019
    Best Exercises Proven To Offer Lower Back Pain Relief

    Do you suffer from lower back pain? For many Americans, lower back pain is part of life. It doesn't have...

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    September 30, 2019
    Not Happy With Your Fitness Level? Hit Your Goals This Way

    Are you crushing your fitness goals? They’re easy to set, but it’s the follow-through and consistency that are hard to...

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    September 21, 2019
    How To Find Workout Motivation When You Feel Like Giving Up

    Mental motivation plays a big part in your physical fitness level. When was the last time you felt like giving...

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    September 11, 2019
    How To Gain Muscle Mass And Get Stronger

    Are you tirelessly working out and not noticing that you’re not feeling strong? Do you read all the latest fitness...

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    March 1, 2018
    Why Your Breathing Sucks And How To Fix It With Diaphragmatic Breathing

    Breathing should be one of the most simple and mindless things that we do every day. Yet, most of us...

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    Official TRX Host Facility