Marin Ultra Challenge

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, California, featuring 50-mile and 50K distances. The course offers about 11,000 feet of elevation gain for the 50-mile race, traversing scenic trails through the Marin Headlands, Mt. Tamalpais, and Muir Woods.

Runners experience a mix of exposed fire roads with coastal and inland views, technical single-track trails under redwood canopies, and challenging climbs like Willow Camp and Cardiac Hill. The race starts and finishes at Rodeo Beach in Sausalito, showcasing iconic vistas including the Golden Gate Bridge. Aid stations provide a variety of nutrition, and the event promotes environmental responsibility as a cupless race. Visit the organization's website for the most recent information.