2026 Mt. Tam Wild Boar Half Marathon & 10K
This event offers a scenic coastal ridge trail run on Mt. Tamalpais State Park, with participants enjoying rolling single-track trails and stunning views of the Pacific Ocean, Bolinas Lagoon, and the Marin County watershed. The course utilizes a combination of paved roadways and dirt single-track trails.
Distances: Half Marathon and 10K
Location: Mt Tamalpais State Park, Mill Valley, CA, United States
Date: Saturday, April 25, 2026
Start Time: 8:00 AM PDT
Participant Limit: 300
Course Details:
- 10K: Runners turn left at Willow Camp Trail and return via the Coastal Trail.
- Half Marathon: Continues along Ridgecrest Blvd. to Bolinas/Fairfax Road and returns via the Coastal Trail.
Cut-off Time: 3 hours
Athlete Check-in: 7:00 - 7:45 AM
Course Markings: Orange ribbon, course monitor for 10K turn, sign for half marathon turnaround.
Aid Stations:
- 10K: One aid station at mile 5.
- Half Marathon: Aid stations at miles 2.35, 7, and 12.
- Food/drink available at the finish.
Incentives: T-Shirts for all participants. Personalized award ribbons for top three finishers (male/female) in each age group. Medals for all Half Marathon finishers.
Headphones Policy: Not allowed due to narrow trails and steep drop-offs for safety.
Cancellations: Registrations are non-refundable and non-transferable. Rollover credit available with a $20 fee if cancelled by March 25, 2026, with purchase of refund protection.
