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Miwok 100K

Sat, May 2, 2026, 5:00 AM PDT

Location
Stinson Beach, CA
32 Belvedere Ave, 94970
Type
TRAIL
Official registrationPast results (if available)

Sign up and verify details on the organizer’s official page.

Profile in progress

More event insights are on the way. Additional race details are being prepared—check back soon, and always confirm timing and logistics on the official registration page.

Distances & registration

4 options

Registration for all distances is through the official signup link above.

  • 100K

    Sat, May 2, 5:00 AM PDT · From $310.00

    Opens Nov 9, 2025, 1:00 AM PST · Closes Dec 29, 2025, 3:00 PM PST

  • 100K

    Sat, May 2, 5:00 AM PDT · From $460.00

    Opens Nov 9, 2025, 1:00 AM PST · Closes Feb 28, 2026, 3:00 PM PST

  • 100K

    Sat, Dec 20, 5:00 AM PST · From $150.00

    Opens Dec 20, 2025, 6:24 AM PST · Closes May 2, 2026, 1:00 AM PDT

+ 1 more option

  • Miwok 100K Team Relay - Teams of 4 runners

    Sat, May 2, 5:00 AM PDT · From $400.00

    Opens Nov 9, 2025, 1:00 AM PST · Closes Apr 15, 2026, 4:00 PM PDT

The course

  • —

Vibe Check

Serious Test

Hilly road course, longer distance

ultra distance, mostly paved, mountainous area, typically mild weather

Based on typical seasonal and area patterns — not a course map or official forecast.

From the organizer

The Miwok 100K is one of the most beautiful and iconic trail ultramarathons in the world. We believe everyone deserves a shot at something extraordinary. The Miwok100K is about the everyday runner who shows up ready to dig deep on some of the most breathtaking trails around. Set in the Marin Headlands just north of San Francisco, The Miwok 100K offers 62 miles of gorgeous trails, over 11,000 feet of gain, and nonstop views, from redwoods to ridge lines to crashing coastal cliffs.

The course features single-track trails and dirt roads with about a mile of paved road. The race is competitive at the front, and a rewarding challenge for all. Less than an hour from San Francisco, the Start/Finish is in the town of beautiful Stinson Beach, nestled against Mount Tamalpais, with its excellent cafés, a small market, lodging, and more.

Course marking is excellent, and you’ll be supported by some of the best volunteers on a race course anywhere. We hire professional medical for all aid stations for those occasional skinned knees and such. Our 2026 runners will receive a custom Miwok 100K finisher’s medal and a Miwok 100K sweatshirt.

We have 3 options for you to participate in our event:

1. Miwok 100K on May 2, 2026 (When the race is full, you will be placed on a Waitlist. Your card will not be charged until you are offered a spot, and accept it. Registered runners who drop prior to February 1 will receive a $124 (40%) refund.

2. Miwok 100K on May 2, 2026, PLUS a 16 week training plan from coach & Race Director Magda Boulet

3. Miwok 100K Team Relay on May 2, 2026 (must have 4 participants per relay)

Please make sure you sign up for the correct event!

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