Logo

Cuyamaca 100K

Descanso, United States • 3 Oct 2026

Course Information

The Cuyamaca 100K is a running event held in Julian, California. The course primarily takes place within Cuyamaca Rancho State Park, located approximately one hour east of San Diego. The race starts and finishes at Camp Cuyamaca off Highway 79.

The route consists of three separate loops, designed to minimize backtracking.

  • The first loop is 31.5 miles. It covers the western side of the park and approaches the summit of Cuyamaca Peak (elevation 6,500 feet).
  • The second loop is 12.6 miles. It travels through the park's southeast corner near Oakzanita Peak.
  • The final loop is 18.3 miles. It goes through the northern section of the park, briefly exits into Anza Borrego, and follows the Pacific Crest Trail (PCT) before returning to the finish.

The event is a Western States Endurance Run qualifying race. Visit the organization's website for the most recent information.

United States California Descanso

Race information

Website Registration
100 km
100k
Visit the organization's website for the most recent information.
Trail runs nearby

Old West Trail Runs

Julian

Run through the scenic and historic trails of Anza Borrego Desert State Park. Choose from a 50K, marathon, or half marathon, starting and finishing at the Stagecoach Trails RV Resort. This is the event's ninth year.

Pirate's Cove 6/12/24 Hour Run/hike

Julian

Choose your challenge at the Pirate's Cove timed endurance run, set on a scenic 2-mile loop around Lake Cuyamaca in the mountains. The event offers 6-hour, 12-hour, and 24-hour distances starting at 8 a.m., with on-site dining and supplies..

Oriflamme Trail Run

Julian

The Oriflamme 50k is an April trail run on a scenic 31.4-mile out-and-back course. It features a 2,000-foot descent into the desert and a challenging climb back up, with aid stations and a 9-hour limit. Participants receive a technical shir..

Ramona Wine Country 5K

Ramona

A trail based 5K at BackCountry Gardens in Ramona featuring a two loop 1.5 mile course with mud and natural obstacles. The event also includes a charity beer mile and a Ramona Ranch wine tasting with food available.