Miwok 100K

The Miwok 100K is one of the most beautiful and iconic trail ultramarathons in the world. Set in the Marin Headlands just north of San Francisco, this legendary race offers 62 miles of gorgeous trails, over 11,000 feet of elevation gain, and nonstop breathtaking views—from ancient redwoods to exposed ridge lines to crashing coastal cliffs.

This race is a Western States 100 qualifier and a UTMB Index race, making it a perfect stepping stone for runners aspiring to compete in the world's most prestigious ultramarathons.

The course challenges runners with steep climbs, exposed ridges, fast-changing weather, and tight intermediate cutoffs, requiring both physical preparation and mental fortitude. With a 15.5-hour time limit and aid stations stocked with everything you need, the Miwok 100K represents the pinnacle of trail racing in Northern California.

Chasing Qualifier Program ✨

This race is specially featured in Tierra Libre Run as part of our groundbreaking "Chasing Qualifier" program—a comprehensive 5-month journey designed to help BIPOC runners achieve their Western States qualifier or run their first 100k.

Through this program, participants receive:

• 5 months of mentorship & coaching
• Race day gear support from our partners
• Virtual workshops on nutrition, pacing, mental preparation, and race strategy
• Access to our mentorship network of experienced BIPOC runners

The relay team option is specifically designed for BIPOC runners who want to experience this iconic course in a supportive team environment, with the goal of building confidence and knowledge to tackle the full 100K in the future.

This is more than just race entry—it's a complete support system to help you succeed.