🏋️ Official Rankings
10 Best Gyms in Longmont, CO (September 2026)
We compared 10 gyms serving Longmont and Boulder County, Colorado, and ranked the top providers by verified reviews, ratings, and local reputation — 1,447 customer reviews in all.
The 10 listed below hold an average rating of 5.0 out of 5, led by The Gym at Prospect. Updated for September 2026.
- Gyms ranked
- 10
- Average rating
- 5.0★
- Reviews analyzed
- 1,447
- Area codes
- 720, 303
⭐ 5.0 · 162 reviews
2030 Ionosphere St Unit C, Longmont, CO 80504
⭐ 5.0 · 140 reviews
900 S Hover St D, Longmont, CO 80501
⭐ 5.0 · 118 reviews
1401 Ken Pratt Blvd, Longmont, CO 80501
⭐ 4.9 · 316 reviews
700 Ken Pratt Blvd #101, Longmont, CO 80501
⭐ 4.9 · 273 reviews
455 Weaver Park Rd unit 600, Longmont, CO 80501
⭐ 4.9 · 256 reviews
117 S Sunset St D, Longmont, CO 80501
⭐ 5.0 · 73 reviews
950 Boston Ave, Longmont, CO 80501
⭐ 5.0 · 48 reviews
340 Lashley St #100, Longmont, CO 80504
⭐ 5.0 · 45 reviews
195 S Main St #10, Longmont, CO 80501
Gyms listed here serve Longmont, Boulder County, and nearby ZIP codes including 80501, 80502, 80503, 80504.