MX3 Fitness

MX3 Fitness

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Gyms in San Francisco's Castro, Noe Valley, Lower Haight and Mission, as well as Sonoma. Personal Training, Monthly Memberships and Classes. Voted Best in SF.

Voted Best of the Bay. Castro & Lower Haight gyms in San Francisco. Monthly memberships and certified personal trainers. Day passes available. Weight Loss, Strength Training.

08/26/2026

How much do we love our members? This much: 🫱————————————————🫲

08/20/2026

Meet Heather! Heather has been a dedicated group fitness instructor and personal trainer in Sonoma County since 2011. Specializing in strength, mobility, flexibility, and circuit training, she takes pride in being an integral part of her clients' wellness journeys. Heather’s coaching philosophy centers on education and body awareness; she ensures every movement is performed with proper form while teaching clients exactly how their bodies are working.

Now accepting new clients. Learn more: https://www.mx3fitness.com/train-with-heather

08/18/2026

Meet Anthony! As a specialist in Corrective Exercise, Strength & Conditioning, Weight Loss, Wellness Coaching and Nutrition, Anthony designs customized programs that go beyond simple workouts. Whether your goal is building muscle, losing body fat, improving mobility, preventing injuries or simply feeling your best, every plan is tailored to your individual needs and lifestyle.

Now accepting new clients. Learn more: https://www.mx3fitness.com/train-with-anthony

08/14/2026

Meet Veronica! Veronica is a dedicated Personal Trainer, Pilates Instructor, and Wellness Coach passionate about helping individuals build strength, confidence, and lasting healthy habits. With a degree in Fitness, Nutrition, and Wellness, along with multiple certifications in personal training, nutrition, and wellness coaching, Veronica takes a personalized approach that supports clients at every stage of their fitness journey. Her coaching style combines education, accountability, and encouragement to help clients achieve sustainable results while improving their overall quality of life.

Now Accepting New Clients. Learn more: https://www.mx3fitness.com/train-with-veronica

08/13/2026

Meet Brandon! Brandon believes fitness should be approachable, individualized and sustainable. As a NASM Certified Personal Trainer and Corrective Exercise Specialist, he specializes in helping clients build strength, improve movement, reduce pain and gain confidence both inside and outside the gym. Whether you’re just beginning your fitness journey, looking to improve athletic performance or navigating health conditions such as Parkinson’s disease or multiple sclerosis, Brandon creates customized training plans designed to meet you where you are. His goal is to make every session challenging, supportive and focused on helping you become stronger than you were yesterday.

Now Accepting New Clients. Learn more: https://www.mx3fitness.com/train-with-brandon

08/11/2026

Meet Stephanie! Stephanie is a certified personal trainer, fitness instructor, nutrition coach, self-defense instructor, and Piloxing Master Trainer with a background in dance and law enforcement. Since 2007, she has inspired and coached individuals of all ages, stages, and fitness levels through personalized training and dynamic group fitness classes. Her mission is to help people build strength, confidence, and healthy habits while creating a positive, supportive, and results-driven fitness experience.

Now Accepting New Clients. Learn more: https://www.mx3fitness.com/train-with-stephanie

08/09/2026

Chris Shiery getting at it with this great crew in his Saturday turf HIIT class.

07/31/2026

Get moving with Lisa Corsello and SCP: Strength+Cardio+Pilates every Tuesday, Thursday and Saturday at 9 am in Sonoma. SCP is three disciplines, one knockout class that blends cardio, strength, and Pilates to challenge your endurance, build lean muscle, and lengthen and stabilize from the inside out.

07/26/2026

Chris Shiery is makin’ them sweat in his Saturday morning turf class.

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Location

Telephone

Address

2336 Market Street
San Francisco, CA
94114

Opening Hours

Monday 7am - 8pm
Tuesday 7am - 8pm
Wednesday 7am - 8pm
Thursday 7am - 8pm
Friday 7am - 8pm
Saturday 6am - 8pm
Sunday 6am - 8pm