Mt. Tam Wild Boar Half Marathon
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2027 Mt. Tam Wild Boar Half Marathon and 10K
The event is the 39th annual Mt. Tam Wild Boar race, held at Mt Tamalpais State Park in Mill Valley, California on April 24, 2027.
Distances
- Half Marathon
- 10K
The course combines paved roadways and dirt single-track trails along a coastal ridge. Runners start at Rock Springs and follow Ridgecrest Boulevard along the spine of Bolinas Ridge. The route offers views of the Pacific Ocean, Bolinas Lagoon and the Marin County watershed. Ten kilometer runners turn left onto Willow Camp Trail and return to Rock Springs via the Coastal Trail. Half marathon runners continue along Ridgecrest Boulevard to Bolinas/Fairfax Road and return via the Coastal Trail.
The field is limited to 300 participants. The course will be marked with orange ribbon; a course monitor will direct 10K runners at the turn and the half marathon turnaround is signed. Course cut-off time is 3 hours, listed paces apply. Aid stations are located at mile 5 for the 10K and at miles 2.35, 7 and 12 for the half marathon, with food and drink available at the finish. Bib numbers are mailed beginning two weeks before the event; unreceived bibs may be picked up on race morning. T-shirts are provided to all participants, medals are awarded to all half marathon finishers, and personalized ribbons are mailed to the top three male and female finishers in each age group. Parking is available at the Rock Springs parking area. Headphones and other audio devices are not allowed on course. Visit the organization's website for the most recent information.
