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. Participants navigate a demanding course that includes steep stairs, rugged trails, and scenic views of the Pacific Ocean. The race begins at Old Mill Park and involves multiple laps, requiring runners to complete the course twice.

Aid stations are strategically placed along the route to support participants. The event emphasizes adherence to the designated trail, prohibiting shortcuts and the use of pacers or trekking poles. Registration for the 2024 event is currently closed. Visit the organization's website for the most recent information.