Mount Tamalpais State Park

One of the most famous routes within the Marin trail-running community is a run from Mill Valley to the 2,572-foot summit of Mt. Tam’s east peak. It’s one of the few trails in Marin with a lot of climbing on technical, rocky terrain, so it’s not for the fainthearted. Views of Sausalito, Tiburon, Angel Island, Alcatraz, East Bay, and SF make it worth it, though. Start at Old Mill Elementary School and follow Summit Ave. until it merges with Fern Canyon Rd., which becomes Old Railroad Grade. That becomes Fern Creek Trail, which will take you to the peak. Make sure to touch the wooden door of the fire lookout when you reach the top—it’s tradition.