Angeles Crest 100 Mile Endurance Run

Event overview

The Angeles Crest 100 Mile Endurance Run is a point-to-point mountain ultramarathon of 100 miles held annually since 1986. The 36th edition is scheduled for October 3, 2026. The course runs between Wrightwood and Altadena in the San Gabriel Mountains, with elevations from about 1,135 to 9,300 feet and roughly 21,610 feet of cumulative elevation gain.

Entry, course and logistics

Entry to the 2026 race is by lottery. Lottery registration opened September 19, 2025 and closed September 29, 2025; 210 spots were available via the lottery. Runners must complete a 50+ mile qualifier between January 1, 2025 and September 3, 2026. Trail work is required by September 3, 2026; Southern California entrants must do trail work with AC100 while entrants north of Fresno or out-of-state may complete local trail work. The SOLO division prohibits pacers and crew, and division changes are not allowed after signup.

The course has been adjusted for 2026 to bypass Chantry Flats because of fire and storm damage. The course will pass through Shortcut, Redbox and Newcomb Saddle, return via Rincon-Redbox Road to Redbox, then use the Gabrielino Trail and the Kenyon/Devore Trail to the top of Mt Wilson before continuing to Idlehour, Sam Merrill, Millard and finishing at Loma Alta Park in Altadena.

Awards and finish standards

Finishers receive a personalized engraved plaque and a finisher T-shirt. Runners finishing within 33 hours receive a finisher buckle; specific buckle tiers are awarded for finishes under 24 hours, between 24:00 and 24:59:59, and between 25:00 and 33:00. Solo division finishers receive designated Solo T-shirts and corresponding Solo buckles. Special buckles are awarded for breaking the existing male and female course record times (male: 17:35:48; female: 21:04:18). Refund policy: 50% refund up until May 1 and 25% up until September 1. Visit the organization's website for the most recent information.

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