🏋️ Official Rankings
10 Best Gyms in Waltham, MA (August 2026)
We compared 10 gyms serving Waltham and Middlesex County, Massachusetts, and ranked the top providers by verified reviews, ratings, and local reputation — 1,271 customer reviews in all.
The 10 listed below hold an average rating of 5.0 out of 5, led by Nolan Bros. Boxing & Fitness. Updated for August 2026.
- Gyms ranked
- 10
- Average rating
- 5.0★
- Reviews analyzed
- 1,271
- Area codes
- 781, 617
Nolan Bros. Boxing & Fitness
⭐ 5.0 · 201 reviews
22 Sun St, Waltham, MA 02453
Boston Underground Strength Training
⭐ 5.0 · 161 reviews
235 High St #3, Waltham, MA 02453
STC Boxing & Fitness
⭐ 5.0 · 138 reviews
20 Clematis Ave, Waltham, MA 02453
Flight Performance & Fitness
⭐ 5.0 · 81 reviews
13 Wall St, Waltham, MA 02453
Orangetheory Fitness
⭐ 4.9 · 205 reviews
10 CityPoint, 500 Totten Pond Rd, Waltham, MA 02451
F45 Training West Waltham
⭐ 5.0 · 69 reviews
475 Winter St, Waltham, MA 02451
Synergy PFT - Opened in 2007!
⭐ 4.9 · 118 reviews
130 High St, Waltham, MA 02453
Gyms listed here serve Waltham, Middlesex County, and nearby ZIP codes including 02154, 02254, 02451, 02452, 02453, 02454, 02455.