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Miwok 100K ultramarathon

MAY 2, 2026 – 5:00 A.M.

The Miwok 100K Presented by The North Face is one of the most beautiful and iconic trail ultramarathons in the world.

Registration for this year’s race is SOLD OUT. Please consider volunteering on race day. Check out our volunteer page to sign up. 

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The Miwok 100K is entering a new chapter as the Miwok 100K Presented by The North Face.

For nearly 30 years, Miwok has been defined by challenging trails, deep community roots, and respect for the land on which we run. Partnering with The North Face allows us to build on that legacy, with a shared commitment to stewardship, storytelling, and inclusive trail running beyond race day.

We’re grateful to the community, volunteers, and runners who make this event what it is, and we’re excited about what’s ahead.

The Course

Set in the Marin Headlands just north of San Francisco, the race offers 62 miles of gorgeous trails, over 11,000 feet of gain, and nonstop views, from redwoods to ridge lines to crashing coastal cliffs. Learn more about the cutoff times and course

Who should run Miwok 100K presented by The North Face?

This race is for runners who:

  • Embrace steep climbs, exposed ridges, and fast-changing weather
  • Have experience with trail ultras and self-supported effort
  • Respect the land and leave no trace
  • Can stay ahead of tight intermediate cutoffs (to ensure safety and meet permit requirements)

You don’t need to be elite. But you do need to be prepared.

What Runners Get

  • A well-marked, scenic, and demanding course
  • Supportive aid stations and a tight-knit trail community
  • A beautiful finisher award to be proud of and ultra-specific goodies
  • A strong community supporting you from training to race day
  • Professional medical care at all aid stations
  • The best crew of volunteers

Registration Info

  • Registration opens: Nov. 9, 2025 at 6 am PST on RunSignUp
  • Race Date: May 2, 2026 at 5 am PST
  • Location: Stinson Beach, CA
  • Field Limit: 400 runners
  • Registration Opens: November 9, 2025, at 6 am PST
  • Time Limit: 15 hours and 30 minutes 

This race sells out quickly. If you’re ready to train, prepare, and take on a challenge, then we’d love to see you at the starting line.

Sustainability, Diversity, Community

Sustainability & Community

The Miwok 100K presented by The North Face is committed to protecting the trails and uplifting the community that makes this race possible. Since 2013, we’ve operated as a cup-less, low-waste event, partnering with 1% for the Planet, Leave No Trace, and GU Energy Labs to reduce our environmental impact.

Through our Bridge to Trails Initiative, launched in 2020, we work to expand access and representation in trail running for Black, Indigenous, and People of Color.

Learn more about our commitment →

Miwok 100K ultramarathon

Volunteers

Be part of the race day magic and join our volunteer crew to help create an unforgettable race experience for runners. Volunteering also earns you priority registration for the next year’s race by volunteering at least 8 hours this year. Sign up here!

Miwok 100K ultramarathon

Apparel Collection

The Miwok 100K Apparel Collection is made possible by Pressio.  The team at Pressio delivers unparalleled quality, and exist to elevate athletes through superior performance; and to elevate expectation through an uncompromising pursuit of sustainable excellence.

Miwok 100K ultramarathon

Sponsors & Partners

Our thanks to the wonderful sponsors and vendors who will be providing cool stuff to our runners. More to come! We’d also like to thank the California State Parks, the Golden Gate National Recreation Area, and Point Reyes National Seashore for their work to manage and maintain the trails on which we love to run!

This year, our donations go to The Cost Miwok of Marin,  Running For a Better Oakland &  Runners for Public Lands

Miwok 100K ultramarathon

Race Photography

2025 Professional Race Photography provided by the amazing photographers and trail running community members Tony DiPasquale and Jacob Banta can be found here.

Miwok 100K ultramarathon

The Miwok 100k presented by The North Face will be a UTMB 2026 Index Race at the 100K Level. 

WS100 2027 Qualifier