Expo: Fri.–Sat., July 24–25
Festival Pavilion, Fort Mason Center
Race: Sunday, July 26
Starts: Embarcadero & Mission St.
Shop for running and fitness apparel, sample healthy snacks, learn about upcoming races, and more at the health and fitness expo. Marathon course winds through the city and across the Golden Gate; several race types are available. Free (expo), $45–$175 (races), 888-958-6668, thesfmarathon.com