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. We hope you like what you see! Just follow the three simple steps below to get started.
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!