Mt. Tam Trail Run
Stinson Beach, United States • 7 Nov 2026
Mt. Tam Trail Run, Stinson Beach, CA : November 7, 2026
The Mt. Tam Trail Run is a trail race hosted by Inside Trail Racing that starts at Stinson Beach and climbs to views from Mt. Tamalpais before returning via Headlands trails to the beach and post-race food. The event lists multiple distances and a race capacity of 500 runners across all distances.
Distances:
- 50K
- 30K
- Half Marathon
- 10K
The 50K has an 8.5 hour time limit and a prize purse for male and female top three overall of $300, $200, and $100. Top three overall finishers for each distance receive a custom trophy. All finishers receive a custom medal and all 50K finishers receive a pint glass. The dead last finisher in each event receives a custom award. Age-group medals are awarded three deep across listed age categories, with additional age-group winner awards from a sponsor for entrants aged 21 and over.
Aid stations provide a range of foods and beverages such as Gu energy gels (note that GGNRA does not allow Gu gels at aid stations on Muir Beach), chews, stroopwafels, trail mix, pretzels, boiled potatoes with salt, soft drinks, water, Skratch hydration mix, pickle juice, peanut butter and jelly sandwiches, bananas, and fruit. Skratch Hydration is mixed to contain about 80 to 100 calories per 20 fluid ounces. Runners are encouraged to carry at least one 20 oz bottle.
Logistics include free parking within the Stinson Beach Day Use Area, Friday bib pick-up at SF Running Company in Mill Valley, and Saturday bib pick-up and check-in at Stinson Beach. Entry fees are non-refundable; partial credit policies and other terms are specified by the organizer. Visit the organization's website for the most recent information.