Mt. Tam Trail Run

Mt. Tam Trail Run is a multi-distance trail race held at Stinson Beach, near Mt. Tamalpais State Park in Marin County, California.

Distances include 50K, 30K, half marathon, and 10K, featuring a climb up Mt. Tamalpais and looping through the Headlands to the beach. Elevation gains range around 1,600 ft (10K) to about 6,000 ft (50K).

The course is marked with ribbons, signs, and maps, with timed results via chip timing. Aid stations offer gels, electrolytes, and snacks; runners are cupless, carrying their own water. The event caps at 500 runners, offers post-race food, and medals for all finishers. Visit the organization's website for the most recent information.