Kansas City’s Premier TRX Training & Fitness Studio | CORE Strong KC
WELCOMING. FUN. CHALLENGING.
Kansas City’s Premier TRX Training & Fitness Studio | CORE Strong KC
WELCOMING. FUN. CHALLENGING.
TRX Training & Recovery Services | KC Crossroads
FIND A CLASS
HEAD COACH & FOUNDER
Mark Campbell has been an NSCA Certified Personal Trainer since 2008, he is the First Certified BLACK Rank TRX Training Coach in the Midwest and officially became a TRX Master Instructor in 2020. Mark is a Theragun Master Trainer, Ybell Master Trainer, FMT Level 1 Certified through RockTape, Certified Barefoot Training Specialist through EBFA, Precision Nutrition Level 1 coach, and a Performance Climbing Coach.
Mark is passionate and motivated to help others reach their Better through movement and health. When not coaching clients or classes, he enjoys rock climbing, running, mountain biking, coffee and spending time with friends.
Your CORE Strong Fitness Coaches

Elena Sherman
Coach
Elena is an NASM certified personal trainer, Certified TRX Coach, Certified pilates instructor and all around badass that will make you sweat, correct your form ,all with a smile! Elena’s back ground in circus has helped her find unique ways to help people get the most out of their workouts while having fun!

Dante Sowell
Coach
Dante is an NASM Certified Personal Trainer, Certified TRX Coach and all around passionate human for life! Dante’s classes feel more like a party, that will guarantee you get a good workout AND dancing and fun!

Alli K. Nelson
Coach
Alli is a Certified TRX Coach that puts the SUN in Allisun! Her bright positive energy makes you want to work harder all while feeling positive about where you are at in your fitness journey! A great workout and fun time will be had at Alli’s classes!

Madison Mears
Coach
Madison is a Certified TRX Coach, Personal trainer, life coach and all around badass human! Taking a class from Madison you will feel inspired and motivated to be a better human all while giving your best and leave feeling empowered for thew hard work you just completed! You will get a mix of fun, motivation, dancing, and challenge when you come to Madison’s classes!

Kat Miller
Coach
Kat is a long time member turned Certified TRX Coach! Her classes will be sure to challenge you and make you welcomed and personal! Every class Kat teaches is guaranteed to leave you feeling it the couple days! Be sure to get in to one of the few classes she teaches, its worth it!

Christian Campbell
Coach
Christian is a Certified TRX Coach that wears his heart and passion on his sleeve. When you come to Christian’s class you know you are always in for a challenge. Christian is very passionate about seeing people reach their goals and encouraging them to get there. He’s always going to make you feel seen when you take his class but always leave feeling successful!
CORE RESET
Core Strong Fitness proudly introduces our new recovery room, featuring cutting-edge recovery boots, a soothing sauna, and an invigorating cold plunge pool. Designed to enhance your fitness regime, this space offers the perfect blend of therapies to reduce soreness, boost recovery, and elevate your overall wellness.
- Single Recovery Session $18 (15min block)
- CORE Rest 5 pack $75 ($15 per session)
- CORE Rest 10 pack $145 ($14.50 per session)
Women’s health in the fitness world is finally changing—for the better!
We’re now getting real data and science specific to women and how training impacts goals, hormones, and long-term health. One of the biggest takeaways from recent research shared by one of the world’s leaders in[...]
The Truth About Fat Loss (and Why Your “Sweaty” Workouts Aren’t Working)
Have you ever finished a workout drenched in sweat, wiped the floor afterward, and thought: “Wow… I must’ve burned a ton of calories.” You’re not alone. Most people judge a “good” workout by how[...]
Why the CORE90 Challenge in Kansas City Is Exactly What You Need to Lose Weight and Build Muscle
Are you in Kansas City, tired of standard gyms, and frustrated by diets that don’t last or workouts that stall? If you’re serious about weight loss and gaining real strength, the CORE90 Challenge from CORE[...]









