Usa-Places.com has listed approx 24 gyms in Boulder. Some of the Top rated gyms in Boulder are- Customized Nutrition & Exercise Gym, 24 Hour Fitness, Orangetheory Fitness, Movement Climbing + Fitness Boulder, APEX School of Movement Boulder, Town Strength, Boulder Athletics, CrossFit Roots, Crunch Fitness - Boulder & KONDITION--Barre | HIIT | Spin | Yoga.