Tamalpa Headlands 50K

The Tamalpa Headlands 50K is a challenging ultramarathon held annually in Marin County, California, starting and finishing at Santos Meadow near Muir Woods. Covering a 50-kilometer single-loop course, the race features approximately 6,500 feet of elevation gain across 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, supported by the Tamalpa Runners and Arc'teryx, offers a vibrant atmosphere with aid stations, a post-race party, and serves as the USATF Trail 50K Championship pending approval. Visit the organization's website for the most recent information.