Expo: Fri.–Sat., May 17–18, Pier 35
Race: Sunday, May 19, 8 a.m.
Starts: Main & Howard Streets
The city’s best-known spectacle returns with world-class runners leading a pack of jogging centipedes and jiggling Elvises (and other body parts), over the treacherous Hayes Street hill to the finish at Ocean Beach. Free (expo), $70–$137 (race; discounts for children and groups), 415-864-3432, baytobreakers.com