Tamalpa Headlands 50K

The Tamalpa Headlands 50K returns to Sausalito, California on August 15th, offering runners a challenging yet scenic journey through some of Marin County's most iconic trails.
Situated just north of San Francisco, the race begins at Santos Meadows near Muir Woods. On race morning, participants will gather before dawn as the sun rises over the rugged terrain that awaits them. The weather forecast for early August typically includes firm and slightly soft trail conditions with a UV index reaching high levels, making it important to be prepared for strong sunlight.
With roots dating back to 1995 when it was known as the Pt. Reyes 50k, this event has become an integral part of Northern California's running community. Over its 27-year history, thousands have participated in what is now a beloved tradition among ultrarunners and trail enthusiasts alike. The Tamalpa Headlands 50K supports local initiatives through sponsorships from Arc'teryx and the Tamalpa Runners.
The course itself winds through some of Marin County's most challenging terrain, featuring trails such as Coastal, Miwok, Matt Davis, and Dipsea. Spanning approximately 6,600 feet in elevation gain, runners will experience steep climbs, fast descents, and flowy singletrack sections while enjoying panoramic views stretching from the Bay Area to the Pacific Ocean.
On race day, temperatures are expected to range between mild morning chill and midday heat with high UV levels. Runners should be prepared for firm and slightly soft trail conditions as they tackle the various elevation changes along the route. The start time is 7:30 AM sharp at Santos Meadows, where runners will begin their journey towards Tennessee Valley before facing additional checkpoints throughout the course.
Registration can be completed online via [https://ultrasignup.com/register.aspx?did=135607](https://ultrasignup.com/register.aspx?did=135607) with a fee of $180.00 for the 50K distance. Participants must complete their registration by August 4th, 2026 to ensure entry into this prestigious event.
Bib pickup will take place on Thursday and Friday before race day at Santos Meadows between 9:00 AM and 7:00 PM each day. Runners should bring a government-issued photo ID for verification purposes. The start location address is Santos Meadows, near Muir Woods National Monument in Sausalito.
The Tamalpa Headlands 50K presented by Arc'teryx takes place on August 15th, 2026, once again as part of the USATF PA Grand Prix series with a generous $10,000 podium purse. For participants looking to experience one of the most stunning and challenging ultrarunning courses in California, this race offers an unparalleled opportunity to explore Marin County's diverse landscapes.

50K | 50K | fee=$180.00
Kids' One Mile Challenge