Tamalpa Headlands 50K

The Tamalpa Headlands 50K is a challenging ultramarathon held in Marin County, California, starting and finishing at Santos Meadow near Muir Woods. Established in 1998, this single-loop 50-kilometer race features approximately 6,500 feet of elevation gain and showcases iconic trails such as Coastal, Miwok, Steep Ravine, Matt Davis, and Dipsea. Runners experience a mix of fast fire roads, steep climbs, flowy singletrack, and technical sections, all with stunning views of the Bay Area and Pacific Ocean.

The event is supported by the Tamalpa Runners club and is a USATF Trail 50K Championship race, offering a vibrant atmosphere and well-stocked aid stations along the course. Visit the organization's website for the most recent information.