Your neighborhood gym in The Castro — modern equipment, personal training, and a welcoming community.
Located in the heart of The Castro at 2301 Market St, FITNESS SF Castro is a neighborhood gym built around community, quality equipment, and a welcoming atmosphere. Whether you're here for a quick workout, personal training, or group fitness, the space is designed to support your goals.
Full fitness center
1-on-1 coaching
Mentioned in 4 reviews
Mentioned in 9 reviews
Everything you need for a great workout, from cardio to personal training.
Full fitness center with cardio equipment, strength machines, free weights, and more.
Work one-on-one with experienced trainers who tailor workouts to your goals and fitness level.
Dedicated space for yoga — mentioned in 4 reviews as a valued part of the gym.
Recently renovated sauna to unwind after your workout — cited in 9 reviews.
Secure locker storage — mentioned in 16 reviews, with recently upgraded locker rooms.
Relax and recover with massage chairs — mentioned in 2 reviews.
From FITNESS SF – Castro
March 5, 2026
Looking for a clean, welcoming gym in San Francisco?
FITNESS SF offers top-tier equipment, group fitness classes, personal training, and access to multiple locations across the city. Come see why so many members call us their favorite place to work out.
Join today and experience FITNESS SF.
2301 Market St, in the heart of The Castro neighborhood.
Cited in 38 reviews — the team is consistently described as welcoming and helpful.
Upgraded locker rooms, showers, and sauna.
A welcoming, inclusive environment for everyone.
Showers, free Wi-Fi, on-site parking, and more.
Monday–Thursday 5 AM–12 AM, Friday 5 AM–11 PM, Saturday–Sunday 7 AM–8 PM.
Yes — there is an on-site parking lot with about 20 spots, entrance on Noe St. Free parking lot available.
Yes — personal training is available with experienced trainers like Nelson and Keith. Members highlight their knowledge and supportive approach.
Yes — wheelchair accessible entrance, parking lot, and restroom are all available.
Yes — the recently renovated sauna is available for members. Mentioned in 9 reviews.
A 1-Day Pass is available for walk-in visitors — mentioned in 3 reviews. Membership is required for regular access.
Credit cards, debit cards, and NFC mobile payments are all accepted.
8 photos from the gym
What members are saying about FITNESS SF Castro
"Been going to the Castro Fitness SF for a bit and it keeps getting better! You can tell they're always upgrading things. The new locker rooms are super nice and the sauna is a little too hot sometimes but great overall. Also, Cole always makes my day. Really sweet and attentive..."
— Rafa, 2 months ago
"This gym has quickly become one of my favorites because of how clean and well-kept it always is. I've had a great experience with the staff, especially Cole, who has been really helpful whenever I've needed direction or tips on equipment."
— Hudson, 2 months ago
"I've been doing personal training at Fitness SF for several months now. It's great! They have a variety of equipment and areas to use. My trainer, Nelson, has been fantastic - kind and patient."
— Jon, 2 months ago
| Monday | 5 AM – 12 AM |
| Tuesday | 5 AM – 12 AM |
| Wednesday | 5 AM – 12 AM |
| Thursday | 5 AM – 12 AM |
| Friday | 5 AM – 11 PM |
| Saturday | 7 AM – 8 PM |
| Sunday | 7 AM – 8 PM |
Get in touch or stop by the gym
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What customers mention most
Based on 358 Google reviews — each tag shown exactly as it appears, with the number of reviews that mention it.
💬 What to expect
Some reviewers note the gym can get busy at peak hours — "crowded" is mentioned in 10 reviews. Plan your visit accordingly, especially weekday evenings.