B3 Fitness
Day pass not confirmed778 Tremont St, Boston, MA 02118, USA
What we found
B3 Fitness is on the Boston map, but no traveller has confirmed yet whether it sells a day pass to visitors, or what it costs.
B3 Fitness has 68 Google reviews and a 4.9 rating. Its website yielded nothing about a day pass. Nothing in the saved reviews describes a day pass; ask at the desk.
From our research into public reviews and the gym’s own pages, Sep 2026. Visitor access still needs confirmation.
Does B3 Fitness sell day passes?
If you’ve trained here or asked at the desk, tell the next traveller. It takes a minute and earns 200 points on the community board.
Opening hours
- Monday5 AM–9 PM
- Tuesday5 AM–9 PM
- Wednesday5 AM–9 PM
- Thursday5 AM–9 PM
- Friday5 AM–9 PM
- Saturday5 AM–9 PM
- Sunday5 AM–9 PM
Hours sourced from Google. Visitor hours can be shorter than members’ hours, so verify before visiting.
Nearby alternatives with a day pass
Other gyms in Boston you can walk into today, closest to B3 Fitness first.



