Quad Dipsea

The Quad Dipsea is a challenging 28.4-mile running event held in Mill Valley, California, featuring approximately 9,000 feet of elevation gain. The course includes steep stairs, rugged trails, and scenic views, taking participants through iconic locations like Muir Woods and Stinson Beach. Runners must complete the course twice, adhering to strict rules that prohibit shortcuts and the use of pacers or trekking poles.

Aid stations are available at key points along the route. Registration closes on November 15, and a waitlist is maintained for those unable to secure a spot. Visit the organization's website for the most recent information.