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Tamalpa Headlands 50K

Mill Valley, United States • 16 Aug 2025

The Tamalpa Headlands 50K is a challenging ultramarathon set in the scenic Marin Headlands, California, featuring a single-loop course that showcases iconic trails such as Coastal, Miwok, and Dipsea. Established in 1998, this event is presented by Nike Trail and the Tamalpa Runners, and it includes approximately 6,500 feet of elevation gain, offering runners a mix of fast fire roads, steep climbs, and technical sections. The race starts and finishes at Santos Meadow, providing a picturesque backdrop for participants and spectators alike. The event is also recognized as the USATF National Trail 50K Championship. Visit the organization's website for the most recent information.

United States Mill Valley

Race information

Website Registration
50 km
50K
Visit the organization's website for the most recent information.
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