Cuyamaca 100K

The Cuyamaca 100K is an endurance running event set in Cuyamaca Rancho State Park, located about an hour east of San Diego, California. The course features three distinct loops, starting and ending at Camp Cuyamaca, with a total distance of 100 kilometers. The first loop, the longest at 31.5 miles, leads runners to the summit of Cuyamaca Peak.

The second loop covers 12.6 miles near Oakzanita Peak, while the final 18.3-mile loop includes breathtaking views along the Pacific Crest Trail. The event encourages community involvement through volunteer opportunities. Registration opens in April 2025. Visit the organization's website for the most recent information.