The 2017 race is filled to capacity, and our wait list is now open.  You may register for the wait list on our Ultrasignup page.

Elizabeth Tenuto, women's champ (right), climbing the high meadows to Cuyamaca Peak (photo by George Blancas).
Kris Brown (above) just after his win.

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.