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Tamalpa Headlands 50K

Name: Tamalpa Headlands 50K
Start: 2025-08-16
End: 2025-08-16
Location: Mill Valley

Mill Valley, United States • 16 Aug 2025

The Tamalpa Headlands 50K is a challenging ultramarathon held annually in Marin County, California, near San Francisco. The single-loop 50-kilometer course features approximately 6,500 feet of elevation gain and includes 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 race starts and finishes at Santos Meadow near Muir Woods, which also hosts the after-party. The event is supported by the Tamalpa Runners club and offers a competitive prize purse. Visit the organization's website for the most recent information.

United States California Mill Valley

Race information

Website

50 km

6500 m+

50k

Visit the organization's website for the most recent information.

Trail runs nearby

Sunday Jun 22

Woodmonster Trail Race

Oakland - 16 mi from Mill Valley

10 mi

The Woodmonster Trail Race is a challenging 10-mile trail run held in Oakland, California, starting and finishing at the Chabot Space & Science Center. The course features a mix of hills and single-track trails, including the notorious Woodmonster climb, known for its steep and demanding ascent. Run..

Fri - Mon Jun 27-30

The Rock The Loch Half Marathon

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The Rock the Loch Half Marathon is a scenic trail running event held at Lake Chabot Regional Park in Castro Valley, California. Scheduled for late June 2025, it offers live and virtual participation options across three distances: 5K, 10K, and half marathon. The 5K is fully paved, ideal for beginner..

Friday Jul 4

Bay 2 Bankers 10K

Fort Mason - 9 mi from Mill Valley

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10 km

The Bay 2 Bankers 10K is a unique running event held in San Francisco, starting near the iconic Ferry Building. Now in its 13th year, the race features a mystery theme celebrating the classic vibes of the city. Participants run through various historic neighborhoods, navigating from checkpoint to ch..

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Dirty Dozen Run

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Saturday Jul 12

Muir Woods Trail Run

Stinson Beach - 5 mi from Mill Valley

10 km

13 mi

30 km

The Muir Woods Mountain Challenge, held at Mt. Tamalpais State Park near Stinson Beach, California, offers trail runs of 10K, half marathon, and 30K distances. The course features a challenging 2,000-foot climb early on, scenic ridge-line views of Stinson Beach and the Pacific Ocean, and technical s..

Saturday Aug 2

Rodeo Valley Trail Run

Sausalito - 4 mi from Mill Valley

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