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Welcome to the Mt. Disappointment Endurance Runs where you can experience some of the finest trails and canyons of the San Gabriel Mountains. Our course is incredibly scenic, yet strenuous and challenging. We feature fully stocked aid stations as you become part of the semi-wilderness surroundings. The final climb to the summit of Mt Wilson up the Kenyon Devore Trail will test each runner with terrain and surroundings that are truly unique to these canyons.


Race News

  April 5, 2017 -
April 8th trailwork has been postponed due to approaching weather. See Trail Work page for details.

  January 18, 2017 -
Both the Mt. Disappointment 25K and 50K will serve as the 2017 USA Track and Field - Southern California Association Mountain / Trail Championships. Join USATF.

  March 3, 2017 -
Registration will open February 14, 2017. Register online at Ultrasignup

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