Fit Girl Fitness
“I've never felt embarrassed, and actually comfortable enough to ask questions about machine settings or form.”
Best Personal Trainers in O'Fallon, MO
15 trainers listed · 6 in O'Fallon · 1 open 24/7 · 10 open weekends · 14 rated 4.5+
Data verified October 21, 2026
Renaud Center
“Nice clean family recreation center, variety of exercise equipment plus aquatic area inside.”
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Team Branch Fitness & Training
“If you're looking to take your fitness to the next level and work with true masters of the craft, Heather and Josh tailor challenging workouts that inspire, and push to new heights.”
Donovan's Strength & Conditioning
“I have experienced nothing but the highest level of training and help from Tommy, Michelle, and Peter.”
Integrity Training Systems
“She is one of the most generous people I have ever met and she truly makes you feel loved and valued every step of the way.”
Crossfit O'Fallon
“Cross Fit O'Fallon is a great place to get your shape going in the direction of fitness.”
This page lists 15 personal trainers and training gyms recorded for O'Fallon, MO. What each one says about its approach, its hours and its booking comes from its own website; ratings and quotes come from public reviews.
Area overview: O'Fallon, MO
6 of the 15 trainers we list are based in O'Fallon; the other 9 serve O'Fallon from towns including Chesterfield (11 mi), St. Charles (11 mi) and Lake St Louis (4 mi). The trainers on this page are rated from 4.4 to 5.0 across 1,289 reviews; 7 have 50 or more reviews and 14 are rated 4.5 or higher. When students and parents rate these trainers on specific qualities, they most often praise professionalism (96%), quality (92%) and communication (79%). The topics that come up most in reviews of the trainers on this page are "atmosphere", "community" and "facilities". 1 is open around the clock; 10 are open on Saturdays and 5 on Sundays. 11 have ten or more years of experience, the longest 27 years. 2 offer a free trial or consultation. We have a website on file for all 15 of the trainers on this page; 10 publish a contact page; 7 list a public email and 3 take bookings online. We count these figures across the trainers on this page; distances are straight-line, and hours and prices change, so confirm the details with the trainer before you enroll.
Why are some trainers here not in O'Fallon?
6 of the 15 listings are based in O'Fallon. The rest come from other towns within 15 mi. Distances are straight-line, and plenty of trainers take clients from further out than their address suggests.
Crossfit Saint Charles -Saint Peters- Cottleville
“Amazingly knowledgeable and helpful coaches and friendly members to help push you!”
Blue Ocean Fitness
“I am a stronger woman (not just physically) because of being a part of this unique, excellent and community-minded gym”
Freedom Fitness -- Wentzville
“She efficiently explains various aspects while ensuring we make the most of our workout, igniting a sense of optimism and belief in our ability to achieve positive change and the facility offers a lot, with a friendly staff.”
Dudas Fitness
“She knows what my goals are and pushing me every day to grow as an athlete and improve.”
Club Fitness
“Great place to workout with very nice equipment.”
Uncharted Crossfit
“Beautiful, clean facility with all the equipment you need; very friendly and knowledgeable staff.”
Tullock Fitness & Performance
“5 months of training with Cory 2x a week has made such a huge difference in my strength and confidence.”
Elite Football Academy / Elite Performance Academy
“It really gives me peace of mind, knowing I'm putting my son in an environment that doesn't allow athletes to collect bad habits & poor sportsmanship.”
Ali McWilliams Personal Fitness
“She showed up to every session authentically and enthusiastically- and while I was growing stronger in the gym, I was also growing stronger in awareness which helped in every aspect of my life.”
Why these companies made our list
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