The iconic Marin Headlands ultramarathon enters a new chapter with a multi-year partnership focused on community, land stewardship, and the future of trail running.

The Miwok 100K, one of the most respected ultramarathons in the United States, has announced a new title partnership with The North Face. Beginning in 2026, the race will officially be known as the Miwok 100K Presented by The North Face.

Set in the Marin Headlands of Northern California, the Miwok 100K is known for its relentless climbs, technical terrain, and deeply rooted community spirit. For nearly three decades, it has stood as a defining race on the West Coast trail-running scene.

A New Chapter for an Iconic Trail Race

Race Director Magda Boulet, a U.S. Olympic marathoner and Western States 100 champion, brings both world-class experience and deep Bay Area roots to the event.

“We are so proud to partner with The North Face as the title sponsor of Miwok 100K,” said Boulet. “This is not only big news for our trail race, but also for our community. This partnership allows us to further commit to land stewardship and to creating an environment that reflects shared values around exploration, nature connection, and the trail running community.”

Rooted in Land and Legacy

The Miwok 100K takes its name from one of the course’s original trails, itself named in honor of the Indigenous stewards of Marin County.

The Coast Miwok people (Huuku’i’ko) have lived on and cared for this land for at least 10,000 years. Their stewardship shaped a rich and abundant ecosystem grounded in deep knowledge of seasonal cycles and the natural environment.

This connection to land remains central to the identity of the race today.

Partnership Beyond Race Day

As title sponsor, The North Face will support the Miwok 100K beyond race day, with a focus on:

• more sustainable event practices

• expanded storytelling

• inclusive community initiatives

These efforts align with The North Face’s Power of Nature platform and reinforce a shared commitment to protecting and celebrating the outdoors.

A Meaningful Investment in Community

Paddy O’Leary, The North Face–sponsored athlete and longtime supporter of the race, shared:

“Miwok represents what trail running is truly about — connection to the land, respect for history, and showing up for one another. Having The North Face step in as title sponsor signals a deep investment in preserving and strengthening the culture of trail running here in Northern California.”

Looking Ahead

The Miwok 100K Presented by The North Face will take place on May 2, 2026, marking the beginning of a three-year partnership.

As the race looks ahead, the focus remains the same: honoring its roots while continuing to grow as one of the most respected and community-driven trail races in the United States.