Registration and the wait list are both now closed.  We look forward to seeing you all on Saturday!

Live tracking of runners can be found at

The 3rd annual Cuyamaca 100k Endurance Run will be held on October 4th, 2014.  Come join us for a scenic adventure in San Diego's Cuyamaca Rancho State Park.  The course features 3 distinct loops through different sections of the park.  You will enjoy wide, grassy meadows, pine and oak forest, and spectacular views of San Diego and the Anza Borrego Desert from Cuyamca Peak and the Pacific Crest Trail.

San Diego Ultra Slam
Since the creation of the Cuyamaca100k last year the RD's of San Diego's mountain ultra races have put together a special award for those runners who complete four races of each iconic ultra distance; 50k, 50 miles, 100k, and 100 miles. Please visit for more information.

Running Medics
Are you a doctor, nurse, paramedic, or other medical professional? Do you want to help the So-Cal ultra and trail running community by volunteering at events? Local ultrarunner and medic, Nick Nudell, is building a great resource to help events and medical professionals hook up to the benefit and safety of all involved. If you are a medical professional with or without a running background, please visit Nick's Running Medics site to see how you can help.
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