Friday, Jun 9, 2017 @ 6:00 AM

San Diego 100

15027 Highway 79

Lake Cuyamaca CA 100 Miler

Registration Closed Wed. Mar 29, 2017 @ 11:59 PM


The 2017 race is filled to limit. An ordered waitlist is posted (click on teacup icon above for wait listed runners) but we are no longer accepting any more applicants to the waitlist. We finalize the official entrants list on April 17. There will be no refunds or otherwise after April 15.


The 2017 race start and finish area is located at south parking of Lake Cuyamaca Recreation Area which is located 9 miles southwest of Julian, CA on state Hwy 79. See race web site for lodging details. All runners are reminded the 2017 event will start at 6:00am PDT on Friday, June 9, 2017 with the completion cutoff of 32 hours ending at 2:00 pm on Saturday, June 10, 2017.


Registration for the 2017 SD 100 is now closed as we have reached limit. The waitlist is now closed but those signed up on the wait list can see their position on the above "teacup icon" The final entrant's list with bib numbers will be posted on April 18, 2017. There will be on additions, refunds, or roll overs after that date. Registration for the 2018 event will open on January 1, 2018.

Qualification to Apply

As a requisite to apply, applicants must have completed a 50 mile ultra race in under 13 hours between the dates of January 1, 2015 to May 1, 2017. Applicants who have completed a 100K or a 100 mile within the time limits of that race within the last two years are also qualified to enter. Applicants are also required to perform 6 hours of trail maintenance as a volunteer or 6 hours of volunteer service at another ultra or other community service from between June 1, 2016 to June 1, 2017. Those who do not complete the volunteer requirement will not be allowed to participate in the race.


The San Diego 100 course is a 90% single track mountain course which covers four recreational areas in the east county mountains of San Diego. The 2017 start and finish area are located at the south parking area of Lake Cuyamaca Recreational Area.  The course includes trails traversing sections of the Pacific Crest Trail (PCT), Noble Canyon, the Cuyamaca and the Anza Borrego State Parks, and Mt Laguna Recreational Areas. A very challenging course with approximately 26,000' feet of total elevation change (13k climb & 13k descent) with a 32 hour time limit. Selected runners must agree to the strictly enforced limit of one crew vehicle which includes any pacers that are helping the runner.

SOLO Division

The 2017 event will again have a Solo Division to recognize all runners who opt to run the entire race without the support of a crew or pacers with spectators only allowed to meet Solo runners at the start and finish line. All finishing Solo runners will receive special awards to include a unique belt buckle. Solo runners will have to rely on their drop bags and the aid stations for all support. Solo runners are allowed to run with other registered runners but must rely on themselves (drop bags) and aid station volunteers throughout the entire race.

Local time: 8:11 AM


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