Marin Ultra Challenge

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, California, featuring 50-mile and 50K events. Celebrating its 11th edition in 2024, the race showcases some of the region's most stunning trails, including the Marin Headlands, Mt. Tamalpais, and Muir Woods.

Participants can expect challenging terrain with significant elevation gains—approximately 11,000 feet for the 50-mile race. The event emphasizes environmental responsibility by being cupless, requiring runners to carry their own hydration solutions. With a capacity of 450 runners, the Marin Ultra Challenge promises a memorable experience for trail running enthusiasts. Visit the organization's website for the most recent information.