San Francisco
MX3 Fitness

MX3 Fitness

Fitness in San Francisco

4.5 44 Google reviews

+1 415 236 25 562336 Market St, San Francisco, California 94114 · Duboce Triangle

MX3 FitnessMX3 Fitness, photo 2MX3 Fitness, photo 3MX3 Fitness, photo 4

Where to find them

2336 Market St, San Francisco, California 94114

Free newsletter

More of San Francisco in your inbox

Local news, new businesses and what's on from The SF Brief, once a week.

Get directionsOpen in Maps

About

MX3 Fitness - Castro offers monthly gym memberships and certified personal training. Day passes available. Voted Best of the Bay with locations in Castro, Mission, Lower Haight and Noe Valley. Locally owned and operated.

Amenities

Accessibility

  • Wheelchair accessible entrance

Hours

Monday
5 AM to 10 PM
Tuesday
5 AM to 10 PM
Wednesday
5 AM to 10 PM
Thursday
5 AM to 10 PM
Friday
5 AM to 10 PM
Saturday
5 AM to 10 PM
Sunday
5 AM to 10 PM

More Fitness in San Francisco

Live Fit Gym - Mission Gym
Live Fit Gym [LFG-Mission] is your downtown wellness hub, blending fitness & recovery in the heart of San Francisco's Mission District. Our Integrative Fitness™ approach combines certified & evidence based Personal Training, Chiropractic Care, Massage Therapy, Acupuncture, Wellness Services, Pain Relief services, Spa Services, Facials/Waxing, & more to support mind-body balance & long-term well-being. Perfect for busy professionals seeking relief, results, & realignment—all in one intimate, high-quality space. Best hours & dedicated holistically to your results. 8 locations in San Francisco, this is fitness reimagined. Because we're more than just a gym.™ *Staffed hours: Mon-Thurs 7AM-8PM , Fri 10AM-6PM, Sat 9AM-6PM, Sun 9AM-4PM!*
Page Street Fit Gym
Page Street Fit (PSF) got it's start in 2021, when the COVID-19 pandemic shut down gyms & fitness centers everywhere. We started running workouts on Page Street between Lyon & Baker, creating a place where neighbors could become friends in an awesome, outdoor fitness setting. We had so much fun that we haven't stopped since. In 2024 we bid adieu to our street workouts and opened our own outdoor gym through our partnership with the New Antioch Baptist Church. In the back parking lot, we host fitness classes, primarily focused on strength, endurance, mobility and athleticism on Monday, Tuesday, Wednesday and Friday evenings. Check us out on Heylo to sign up for classes and learn more. We can't wait to see you there!
Strong Friends Gym Gym
Strong Friends offers Personal Training and Semi Private Group Training ! Come Experience our unique 60 minute semi private group classes!
Invincible Barbell Gym
We offer strength training for all skill levels from beginners to competitive Olympic weightlifters and Powerlifters.
YuBalance - Noe Valley Gym
YuBalance Neighborhood Fitness Studio provides fun and efficient total body workouts designed to build lean muscle, reduce fat, and improve cardio-endurance. Using free weights, body weight movements and minimal equipment, we target every major muscle group to improve your physique, posture, confidence and overall well-being. Whether you are a seasoned athlete, new to fitness, take classes or work one-on-one with a Trainer, we will help you get into great shape and stay there without having to run, use machines or step foot in a crowded gym again.
Custom Fit Gym
Custom Fit specializes in providing an individualized approach to fitness and health. We have a team of personal trainers, nutritionists, dietitians, and other wellness specialties. We train out of a by-appointment-only gym in San Francisco specifically designed for personal training, and we can measure, track, and analyze your biometrics using our DEXA scanner to accurately quantify results.
Roar Gym
Women-led strength training studio empowering women through fitness & community.
Equinox Van Mission Gym
Equinox Van Mission is a luxury fitness club in the Mission District, San Francisco, offering personal training, group fitness classes, and spa amenities. Members enjoy a strength floor, full cardio equipment, mat pilates, Aescape robotic massage, and a heated yoga and barre studio, with programming led by world-class coaches in a meticulously designed space. Equinox is more than a gym. It's a commitment to human performance. Click, call, or come in to explore membership options.
The SF Brief

© 2026 The SF Brief.

Get a concise look at what’s happening across San Francisco, from neighborhood changes to citywide decisions. Subscribe for local context that helps you follow the city without sorting through the noise.

© 2026 The SF Brief.