Date: October 2, 2021

Race Headquarters: Camp Cuyamaca, Cuyamaca Rancho State Park

Entry: Historically, we limited the event to 250 entrants.  The 2021 event may or may not be able to accept that many depending on restrictions related to Covid-19.

Qualifications:  WAIVED THIS YEAR

Registration: See the registration page for detailed information.  The registration fee is $190. In the event that you must withdraw from the race, you are entitled to a refund of $150 before 7/01/21, and $100 before 9/1/21.

Race Start:  Saturday, October 2, 6:30 am.

Time Limit:  19 hour time limit with intermediate cutoffs.

Awards:  All entrants will receive a short-sleeved technical t-shirt and a full zip hoodie with our Cuyamaca 100k logo.  All finishers will receive a 100k medal.  The overall winners will get a free entry to next year's race, and 1-3rd place and masters winners will receive a unique hand-crafted award.

Course:  100 kilometers in Cuyamaca Rancho State Park.  A small portion of the race takes place in Anza Borrego State Park.

Aid Stations:Aid stations will have as a minimum: water, Tailwind Nutrition Sport Drink, Honey Stinger Energy Gels and Chews , fruit, salty foods/chips, sweets (cookies, candy, etc), and ice.

Race Sponsors: Tailwind Nutrition, Honey Stinger, SaltStick, and Foot Kinetics.  Cupless Racing Sponsored by HydraPak. If you would like to become a Cuyamaca100k sponsor, please contact the race director at

Volunteering:  This type of event could not take place without the selfless efforts of the volunteer force.  If you would like to volunteer, please complete the form located here.  Volunteer duties may include course marking or sweeping, aid station help, road crossing marshals, parking management, etc..

Detailed information:  Updated 7/9/21-Detailed information covering the race rules, crew, directions, etc..Please read!!!

Driving from San Diego:
  • Head east on Interstate 8 out of San Diego.  After leaving El Cajon, drive about 20 miles further to CA-79/Japatul Valley Rd (exit 40)
  • Turn left and head north on CA-79/Japatul Valley Rd.
  • In 2.8 miles, turn left again to stay on CA-79. 
  • In 6 miles turn right into School Camp.