Aquathon: Saturday, Aug. 14, 7–9 a.m.
Triathlon: Sunday, Aug. 15, 7:30–9:30 a.m.
Festival: Saturday, Aug. 14, 11 a.m.–5:30 p.m. & Sunday, 7 a.m.–2:30 p.m., Marina Green
The shorter aquathlon features a 750-meter swim and a five kilometer run; the triathlon course includes a 1.5-mile swim from Alcatraz, an 18-mile bike ride to the Great Highway through Golden Gate Park, and an eight-mile run through the Golden Gate Recreation Area. The Fitness Festival features health and fitness exhibits, a food court, beer garden, and experiential displays. $346 & $750, escapealcatraztri.com