Mt. Tam Wild Boar Half Marathon
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Mt. Tam Wild Boar Half Marathon & 10K
The Mt. Tam Wild Boar event on April 24, 2027 is the 39th annual running at Mt Tamalpais State Park in Mill Valley, California. The event field is limited to 300 participants and offers two official distances:
- Half Marathon
- 10K
The course combines paved roadways and dirt single-track trails along the coastal ridge of Mt. Tam. Runners follow Ridgecrest Blvd. from the start at Rock Springs along the spine of Bolinas Ridge. The 10K route turns left at Willow Camp Trail and returns to Rock Springs via the Coastal Trail. The half marathon continues to Bolinas/Fairfax Road before returning on the Coastal Trail. The route provides views of Bolinas Lagoon, the Pacific Ocean, and the Marin County watershed.
Course details include marked trails with orange ribbon, a course monitor to direct 10K runners, and a signed half marathon turnaround. Aid stations are located at mile 5 on the 10K, and at miles 2.35, 7, and 12 on the half marathon; food and drink will be available at the finish. The overall course cut-off is 3 hours; hikers and walkers are allowed. Participant incentives include t-shirts for all entrants, medals for all half marathon finishers, and personalized award ribbons mailed to the top three finishers in each age group for all distances. Bib numbers are mailed beginning two weeks before the event. Parking is available in the Rock Springs parking area within the state park. Visit the organization's website for the most recent information.
