Muir Woods Marathon

Event overview

The 36th annual Stinson Beach / Muir Woods event takes place on May 9, 2026, in Stinson Beach, CA. Distances offered:

• Marathon
• Half Marathon
• 7 Mile

The field is limited to 300 participants. Registration fees vary by distance and age category and include early-bird pricing periods. Bib numbers are mailed beginning two weeks before the event; participants who do not receive a bib may pick one up on race morning. All participants receive a T-shirt. Finisher medals are awarded to Full Marathon and Half Marathon finishers. Personalized award ribbons are mailed to the top three male and female finishers in each age group.

Course and logistics

The course leaves the Stinson Beach area and follows wooded trails through Muir Woods, including the Dipsea trail to Steep Ravine. The route includes a wooden ladder, natural rock and wooden staircases, and sections that pass under tree trunks, with brooks and waterfalls along the way and summit viewpoints before the return descent to Stinson Beach. The course is marked with orange ribbon. The 7 Mile distance turns at the first aid station; half marathoners and marathoners complete a loop, with marathoners repeating the loop and adding an out-and-back segment marked at the turnaround.

Aid stations are located at miles 3.8, 7.5, 10.5, 14.2, 17.2, and 22.2. There is a 6.5-hour course cut-off. Headphones and other audio devices are not allowed due to narrow trail sections with drop-offs. Parking is available at Stinson Beach Park. Visit the organization's website for the most recent information.