TJ is in the Box 0830....

CrossFit Southside

Community and Fitness for Everyone

About our Gym

We are a gym focused on building a great fitness community in the Southside of Jacksonville, Florida. We are big on coaching, education and the right people. We study and teach the mechanics of good movement, and focus on consistency and intensity. Our programming is based on the foundational principles of CrossFit. We offer supplemental sessions in each of those elements. We do this so every level of member can not only participate, but grow.

We have had the opportunity to travel the country teaching and lecturing at CrossFit Certifications as part of the HQ team. We regularly host Level 1, Level 2, and Specialty Courses. We have borrowed from dozens of quality facilities, programs and coaches. This gym is what we believe to be the very best parts of CrossFit. . . right here in Southside.

Justin Bergh
Founder, Owner CrossFit Southside
Co-director of the CrossFit Games.

T.J. Cooper
Founder, Owner CrossFit East
CrossFit Affiliate # 3 est. 2001

Why CrossFit Southside

We're all about helping you get your fitness goals. At CrossFit Southside you'll find people who are ready to help!


Check out the classes we currently offer and our schedule for the week.



We offer month-to-month and annual memberships. Purchase a membership, punch card, or drop in online.



Have a question? Don't hesitate to reach out. Take a look around and learn more about our gym and culture!


Our Facility

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