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Get One Week Free!

Let’s do this! If you are a San Francisco resident, try one of our monthly memberships free for the first week at our Castro or Mission District locations only (not available in Noe Valley or Lower Haight). We hope you like what you see! Just follow the three simple steps below to get started.

How Monthly Memberships Work

We offer monthly gym memberships that work for you. Pick a fitness membership tier based on how much you want to work out per week (don’t worry, you can always add additional credits or upgrade if you want to work out more)*. Once you sign up, you have keyless access to our private, reservation-only gyms. When you are ready to sweat, use our online system to reserve your personal fitness station which has all the equipment you need to get fit, including a squat rack, functional cable machine, free weights… the works!

Following your free trial, your membership will be automatically activated unless you email us to let us know to cancel.

Got questions? Want a Tour? Click HERE to contact a MX3 Fitness expert.

*Monthly memberships credits do not roll over. They expire each month on the date you originally signed up.

Noe Valley and Lower Haight

If you are interested in joining our Noe Valley or Lower Haight Locations, please get on the waitlist for the location you are interested in:


Noe Valley Waitlist Lower Haight Waitlist

Step 1. Create an Account

Create a free account to get started. You will be required to verify your San Francisco residency before your trial is fully activated.


How did you hear about MX3 Fitness?:

Already have an account? Log In Now

Step 2. Verify Your Email

Send Verification Code

Step 3. Start Your Trial

1x Per Week: Set Up Now
one week free then $99 per month

3x Per Week: Set Up Now
one week free then $159 per month

5x Per Week: Set Up Now
one week free then $189 per month.
5x trial includes 3 credits

7x Per Week: Set Up Now
one week free then $219 per month.
7x trial includes 3 credits

If you decide to continue after your one-week trial is complete, your membership will start and you will be automatically billed each month. You can cancel your membership at any time before your trial is complete.

You can upgrade or downgrade your membership level anytime during your trial period. Just let us know, and we can send instructions. Welcome to the MX3 Fitness family!