Miwok 100K

Miwok 100K is a legendary ultramarathon in the Marin Headlands, celebrating the drama and beauty of Northern California’s coastline. The course weaves through soaring ridgelines, lush redwoods, and sweeping ocean vistas, giving runners a rare blend of challenge and inspiration. Designed to highlight the region’s natural wonder and trail running heritage, Miwok offers both seasoned ultrarunners and passionate newcomers an unforgettable, uplifting experience in a welcoming and community focused environment.