A legendary point-to-point 100-miler through the San Gabriel Mountains since 1986
Other trail races within 131 miles
One of the original five 100-mile trail races in the United States, the AC100 follows a rugged point-to-point course from Wrightwood to Altadena through the San Gabriel Mountains and Angeles National Forest. Runners traverse portions of the Pacific Crest Trail, climbing Mount Baden-Powell, along with the Silver Moccasin and Gabrielino trails, with elevations ranging from 1,135 to 9,300 feet. The demanding terrain and summer heat make this one of the toughest 100-milers on the West Coast.
Wrightwood, CA, United StatesOctober 03, 2026
Must complete a 50 Mile race or longer within the qualification window
Must complete a 50+ mile race between January 1 and a month before race day.
Qualifying period: Through July 13, 2026
| Location | Mile | Elevation |
|---|---|---|
Start & Finish Start | 0.0 | 1,306 ft |
Clear Creek Aid Station | 11.2 | 3,609 ft |
Josephine Saddle Aid Station | 13.7 | 4,905 ft |
Red Box Aid Station | 24.6 | 4,623 ft |
Shortcut Saddle Aid Station | 41.3 | 4,787 ft |
Chilao Aid Station | 49.1 | 5,240 ft |
Mt Hillyer Trail Aid Station | 52.8 | 5,883 ft |
Newcomb Saddle Aid Station | 72.3 | 4,029 ft |
Chantry Flat Aid Station | 78.0 | 2,129 ft |
Mt Wilson Aid Station | 84.8 | 5,673 ft |
Sam Merrill Trail Aid Station | 90.5 | 4,478 ft |
Millard Canyon Aid Station | 96.9 | 1,923 ft |
Finish Finish | 100.8 | 1,309 ft |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
No dogs are allowed at any aid stations or on the course.
August in Southern California is hot, and the dry heat + altitude can be a killer.
No required gear specified
No recommended gear specified
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