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Tamalpa Headlands 50K

Mill Valley, United States • 16 Aug 2025

The Tamalpa Headlands 50K is a challenging ultramarathon held in Sausalito, California, featuring a single-loop course through Marin County's iconic trails such as Coastal, Miwok, Steep Ravine, Matt Davis, and Dipsea. The race starts and finishes at Santos Meadows near Muir Woods, offering stunning views of the Bay Area and Pacific Ocean. With approximately 6,500 feet of elevation gain, the course includes fast fire roads, steep climbs, technical singletrack, and multiple aid stations. The event also hosts the USATF Trail 50K Championship and emphasizes environmental care with a cup-free policy. The race is known for its vibrant atmosphere and scenic beauty. Visit the organization's website for the most recent information.

United States California Mill Valley

Race information

Website Registration
50 km
6500 m+
50k
Kids' One Mile Challenge
Visit the organization's website for the most recent information.
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