🏋️ Official Rankings
10 Best Gyms in O'Fallon, MO (September 2026)
We compared 10 gyms serving O'Fallon and Saint Charles County, Missouri, and ranked the top providers by verified reviews, ratings, and local reputation — 993 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Resilient Boxing. Updated for September 2026.
- Gyms ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 993
- Area codes
- 636, 314
#1
#2
#3
#4
⭐ 5.0 · 62 reviews
18 W Industrial Dr, O'Fallon, MO 63366
#5
⭐ 5.0 · 61 reviews
2433 State Hwy K, O'Fallon, MO 63368
#6
⭐ 5.0 · 47 reviews
106 N Cool Springs Rd, O'Fallon, MO 63366
#7
#8
⭐ 4.9 · 75 reviews
2439 State Hwy K, O'Fallon, MO 63368
#9
#10
⭐ 4.8 · 95 reviews
2305 State Hwy K, O'Fallon, MO 63368