Rules and FAQ
No headphones or strollers
Enviro-Sports bans headphones and any audio device at its races because the trails are narrow and runners need to hear each other; anyone seen using one is disqualified. Strollers are not allowed either.
Stinson Beach/Muir Woods Trail Marathon 2027
- Date
- Saturday, May 8, 2027
- Location
- Stinson Beach, California
Go to the race website
Registration details are on the race's own site.
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Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| 7 Mile | Other | May 8, 2027 | See registration | – |
| Half Marathon | Half Marathon | May 8, 2027 | See registration | – |
| Marathon | Marathon | May 8, 2027 | See registration | – |
Fees and dates are from the race's official website on the date shown below; confirm them there before you register.
Race day planning
What a typical finish looks like
A typical finisher at a marathon in California runs 5:20:52, about 12:14 a mile, based on 11 races with published results. Women typically finish in 5:36:13 and men in 5:08:05.
Light and altitude
Sunrise on race morning is at about 6:07 AM.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
Stinson Beach Park, Stinson Beach, CA
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
Race guide
What runners should know about Stinson Beach/Muir Woods Trail Marathon, in brief, from the official race website.
More from the race
Refunds and credits
Entry fees are not refunded or transferable. A runner who withdraws at least 30 days before race day can get a rollover credit toward a later Enviro-Sports event, minus a rollover fee.
More from the race
Discount for young runners
Children aged 8 to 13 who run with an adult get half off the entry fee through the EnviroKids program; email the organizer to sign them up.
Facts on this page come from the race's official website (envirosports.com/marin-trail-runs, envirosports.com/event-calendar, envirosports.com/faqs), checked Sep 28, 2026. Confirm dates and fees there before you travel.
Race details
- Where
- Stinson Beach Park, Stinson Beach, CAMap
- Course
- Trail
- Distances
- Marathon, Half Marathon, Other
Organize this race? Add details or a correction
Plan your race
Quick answers
- When is Stinson Beach/Muir Woods Trail Marathon?
- Saturday, May 8, 2027.
- How much does it cost?
- See the registration page for current pricing.
- What distances can I run?
- Marathon, Half Marathon, Other.
- Where does it start?
- Stinson Beach Park, Stinson Beach, CA.
About the race
A May trail race starting from Stinson Beach Park, with a marathon, half marathon and 7 mile run on Marin trails toward Mt. Tamalpais and Muir Woods. Enviro-Sports, based in Stinson Beach, organizes it.