Logo

Womens Headlands Half Marathon

Mill Valley, United States • 4 Oct 2025

The Women's Headlands Half Marathon is a scenic 13.2-mile trail race held annually in the Marin Headlands near Mill Valley, California. Celebrating its third year in 2025, the event features a challenging course with nearly 2,000 feet of elevation gain, showcasing stunning singletrack trails, sweeping views, and exhilarating climbs and descents. The race starts and finishes at the San Francisco Running Company store, fostering a strong trail community atmosphere. New initiatives include group training runs, custom coaching plans, and shuttle services from San Francisco and the East Bay. The event emphasizes both the physical challenge and the rewarding experience of running through iconic Marin terrain. Visit the organization's website for the most recent information.

United States California Mill Valley

Race information

Website
21 km
Half Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

Pacifica Summit Run

Pacifica - 19 mi from Mill Valley

Pacifica Summit Run, staged at San Pedro Valley State Park in Pacifica, California, features 10K and half-marathon trail races hosted by Urban Coyote Racing. Runners enjoy postcard views of the Pacific Ocean coastline and plenty of switchbacks as they ascend the summit on the upper San Francisco Pen..

Dick Collins Firetrails

Castro Valley - 30 mi from Mill Valley

Dick Collins Firetrails is the 42nd annual trail event presented by Scena Performance at Lake Chabot Regional Park (17936 Lake Chabot Rd). The event comprises multiple trail races on East Bay regional trails, including sections on Dinosaur Ridge, the Garin-Chabot Trail, Skyline Gate, Reinhardt Redw..

UTMB Index

Star City San Bruno Mountain Half Marathon

Brisbane - 17 mi from Mill Valley

Star City San Bruno Mountain Half Marathon & 5K, organized by the Excelsior Running Club, takes place in Brisbane, CA, on the San Bruno Mountain trails. The course is 93% on trail with about 2,400 feet of elevation gain, including a single-track downhill and sweeping views of the Pacific, Bay, and S..

Gold Country and Headlands Half Training Run

Mill Valley

The Women's Headlands Half Marathon is a trail running event held in the scenic Marin Headlands near Mill Valley, California. This race features a brand-new half marathon course that highlights the area's stunning singletrack trails, challenging climbs, and exhilarating descents, offering runners a..

Reservoir Dogs Trail Run - Orinda, CA

Orinda - 20 mi from Mill Valley

The Reservoir Dogs Trail Run takes place at the San Pablo Reservoir / Briones Reservoir area (East Bay Municipal Utility District), Orinda / El Sobrante, CA, on October 4, 2025. Distances offered are: 35K : 23.4 miles, 2,800 ft elevation gain Half Marathon : 13.9 miles, 1,450 ft elevation gain 10K..

Go Wild Marin 4 Hr

Corte Madera - 1 mi from Mill Valley

Go Wild Marin offers a trail and wilderness navigation challenge in Corte Madera, California, with 2-hour and 4-hour options. Teams of 1 to 5 use a custom map to locate up to 24 checkpoints scattered along trails and wild areas of the Tiburon Peninsula. The event emphasizes exploration and navigatio..