August 16, 2025: The 20th annual HammerHead Ocean Marathon is one of our two annual events and offers open water swimming for 1k, 2k and 5k distances.

Swimmers will finish just north of the Jax Beach Lifeguard Station. There will be ample water support, hand-crafted awards, post-race food, and helpful volunteers.

Swimmers: Please keep an eye out here for the 2025 Race Director Letter with announcements about this year’s event.

We look forward to seeing you on the beach and in the water this year!