The service group hosts its annual sports extravaganza Saturday and Sunday, and even if you haven't registered there are openings.
Saturday features the 7 a.m. 10K run, which stretches from Sunset Park onto North Island Naval Air Station, and the 11 a.m. rough water swim.
Sunday's triathlon starts at 7:30 a.m. The swim and run are on North Beach, while the biking will take place on the base.
Diving also takes place Sunday at the beginning at 9 a.m.
If you procrastinated, organizers will accept registration the day of the races - on Saturday by 6:45 a.m. and Sunday by 7:15 a.m.
The events are free to view, but for entry fees are required for competitors.