Cuyamaca 100k

Event Details

Date: Saturday, October 4, 2025
Time: 6:30 AM PT
Location: Cuyamaca Rancho State Park, Julian, CA

Course Description

The majority of the Cuyamaca 100k course lies within the boundaries of Cuyamaca Rancho State Park, approximately one hour east of San Diego. The course consists of three distinct loops, all of which start and end at Camp Cuyamaca off of Highway 79.

Each loop covers a different set of trails with minimal backtracking and repetition:

• The first loop is 31.5 miles and traverses the western side of the park, approaching the summit of Cuyamaca Peak at 6500'.
• The second loop is 12.6 miles, featuring the southeast corner of the park near Oakzanita Peak.
• The final loop is 18.3 miles, bringing runners through the northern section of the park, briefly leaving the park to enter Anza Borrego, and showcasing stunning desert views along the PCT before returning to the finish.

Registration

Registration closes on Friday, September 26, 2025 at 11:59 PM PT. The fee for the 100K is $264.42 including taxes and fees.

Volunteers

If you would like to help out at the race this year, please complete the volunteer form at this link.