61 mi, 4 M, 3303 ft; Marin Headlands Trails,Golden Gate N.R. Area,Skyline South 4,Conzelman

Start from Grant Park and Community Center to Crystal Springs, Golden Gate Park, Presidio, Golden Gate, Tennessee Valley's unpaved Bobcat Trail for overnight bike camp at Hawk. Option to skip the overnighter and return via Caltrain 4th and King: see Day 2. Start location: 1575 Holt Avenue, Los Altos [Route/Map]