🏋️ Official Rankings
10 Best Gyms in Boulder, CO (September 2026)
We compared 10 gyms serving Boulder and Boulder County, Colorado, and ranked the top providers by verified reviews, ratings, and local reputation — 1,485 customer reviews in all.
The 10 listed below hold an average rating of 4.9 out of 5, led by Transform Colorado - BLDR. Updated for September 2026.
- Gyms ranked
- 10
- Average rating
- 4.9★
- Reviews analyzed
- 1,485
- Area codes
- 303, 720
⭐ 5.0 · 479 reviews
3000 Pearl Pkwy #1100, Boulder, CO 80301
⭐ 4.9 · 185 reviews
By Sprouts &, 2525 Arapahoe Avenue, McGuckin Way, Boulder, CO 80302
⭐ 4.9 · 101 reviews
3161 Walnut St, Boulder, CO 80301
⭐ 4.9 · 92 reviews
2525 Arapahoe Ave Bldg H7, Boulder, CO 80302
⭐ 4.8 · 86 reviews
2907 55th St Ste 5, Boulder, CO 80301
⭐ 4.8 · 86 reviews
1750 29th St Ste 2020, Boulder, CO 80301
⭐ 4.9 · 38 reviews
4735 Walnut St Ste E, Boulder, CO 80301
Gyms listed here serve Boulder, Boulder County, and nearby ZIP codes including 80301, 80302, 80303, 80304, 80305, 80306, 80307, 80308, 80309, 80310, 80314, 80321 and more.