Muir Woods Marathon

Muir Woods Marathon, Half Marathon & 7 Mile

The event is based at the Stinson Beach parking area in Stinson Beach, California, and is limited to 300 participants. Three distances are offered:

• Marathon
• Half Marathon
• 7 Mile

Runners leave the sea level start and proceed into the wooded trails of Muir Woods via the Dipsea trail toward Steep Ravine. The course includes a wooden ladder, natural rock and wooden staircases, and sections that require scrambling under tree trunks. Participants pass brooks and waterfalls and run through stands of redwoods and oaks. After reaching a summit with panoramic vistas, the route descends back to Stinson Beach.

The course is marked with orange ribbon. Seven mile participants turn at the first aid station; half marathoners and marathoners continue on a loop; marathoners complete the loop twice plus an additional out and back with a marked turnaround. Aid stations are located at miles 3.8, 7.5, 10.5, 14.2, 17.2 and 22.2; carrying water is recommended. The course cutoff is 6.5 hours. Hikers and walkers are welcome.

Bibs are mailed beginning two weeks before the event; if a bib is not received beforehand it may be picked up at the start/finish area on race day morning. Safety pins and course maps are available at check-in. Parking is available at Stinson Beach Park. Headphones and other audio devices are not allowed due to narrow trails and steep drop offs. Registrations are non refundable and non transferable; refund protection must be purchased at checkout. Without refund protection, a rollover credit may be issued for cancellations requested by April 9, 2026 subject to a $20 fee. Visit the organization's website for the most recent information.