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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 covers 50 kilometers with approximately 6,500 feet of elevation gain, combining fast fire roads, steep climbs, technical singletrack, and stunning views of the Bay Area and Pacific Ocean. The event starts and finishes at Santos Meadow near Muir Woods, offering a vibrant after-party. It also serves as the USATF Trail 50K Championship, attracting competitive runners. Aid stations are strategically placed along the route, and the race emphasizes environmental respect and safety. 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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