🏋️ Official Rankings
10 Best Gyms in Longmont, CO (August 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 August 2026.
- Gyms ranked
- 10
- Average rating
- 5.0★
- Reviews analyzed
- 1,447
- Area codes
- 720, 303
The Gym at Prospect
⭐ 5.0 · 162 reviews
2030 Ionosphere St Unit C, Longmont, CO 80504
F45 Training Longmont
⭐ 5.0 · 140 reviews
900 S Hover St D, Longmont, CO 80501
Crossfit Longmont
⭐ 5.0 · 118 reviews
1401 Ken Pratt Blvd, Longmont, CO 80501
Club Pilates
⭐ 4.9 · 316 reviews
700 Ken Pratt Blvd #101, Longmont, CO 80501
Train Station Fitness Center
⭐ 4.9 · 273 reviews
455 Weaver Park Rd unit 600, Longmont, CO 80501
Tran's Martial Arts & Fitness Center, Inc
⭐ 4.9 · 256 reviews
117 S Sunset St D, Longmont, CO 80501
Training For Warriors Longmont Gym and Fitness Center
⭐ 5.0 · 73 reviews
950 Boston Ave, Longmont, CO 80501
Fit Chick Express
⭐ 5.0 · 48 reviews
340 Lashley St #100, Longmont, CO 80504
Peak Conditioning and Fitness
⭐ 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.