Featuring many of Marin County's most famous trails - Coastal, Miwok, Steep Ravine, Matt Davis and Dipsea - the 26th annual the Tamalpa Headlands 50k presented by Arc'teryx and Tamalpa Runners provides a spectacular setting for this classic, single-loop ultramarathon that was founded in 1998. The event has the full support of Marin's largest running club, the Tamalpa Runners as well as UltraRunning Magazine.
Just a hop and a skip from downtown San Francisco, the Tamalpa Headlands 50k is a demanding ultramarathon with approximately 6,500-feet of elevation gain featuring fast fire road running, steep climbs, flowy singletrack, technical sections and stunning views of the Bay Area, Pacific Ocean and beyond. The race starts and finishes at the idyllic and the beloved Santos Meadow in Muir Woods as the staging area for the start and finish line after-party.
Please join us on Saturday, August 16th, 2025, to enjoy all the splendor that the Marin Headlands and Mount Tamalpais has to offer in one of the country's most stunning places to celebrate the sport of ultrarunning.
Start Time: 7:30 AM
Prize Money
$10,000
Finisher and Age Group Awards
All registered runners will receive our specially designed Headlands 50K T-shirt and a goody bag. Our T-shirts are created by renowned artist and friend Nick Wilton.
Age group awards (not money) will be given to the top men and women finishers in the following divisions:
19 years old and under
20 to 29 years old
30 to 39 years old
40 to 49 years old
50 to 59 years old
60 to 69 years old
70 to 79 years old
80 to 89 years old
We will also have special mid-pack and back of the pack awards.
Post Race Party
There will be food provided by Casablanca Moroccan and Mediterranean Food.
