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Mt. Tam Wild Boar Half Marathon

Mill Valley, United States • 25 Apr 2026

Mt Tam Wild Boar Half Marathon & 10K takes place in Mt Tamalpais State Park, Mill Valley, California. The coastal ridge course blends rolling single-track with paved sections, offering views of the Pacific Ocean, Bolinas Lagoon, and Marin County watershed. Runners traverse Ridgecrest Blvd along Bolinas Ridge; the 10K returns via the Coastal Trail, while the half marathon continues to Bolinas/Fairfax Road and back along the Coastal Trail.

The event is limited to 300 participants, marked with orange ribbons and guided by course monitors. Aid stations are at mile 5 (10K) and miles 2.35, 7, 12 (half). Perks include T-shirts, medals for half finishers, and age-group ribbons; bibs are mailed; headphones are not allowed; hikers welcome; parking at Rock Springs. Visit the organization's website for the most recent information.

United States California Mill Valley

Race information

Registration
21 km
Half Marathon - Adult
21 km
Half Marathon - Youth
10 km
10k - Adult
10 km
10k - Youth
Visit the organization's website for the most recent information.
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