A brand-new 100K loop through the San Gabriels on AC100 race day
Other trail races within 117 miles
The Angeles Crest 100K is a new race for 2027, held on the same day as the historic AC100 100-mile run. It starts at 7:00 AM and finishes at Loma Alta Park in Altadena. The loop climbs from the edge of Los Angeles into the San Gabriel Mountains past Clear Creek, Josephine Peak and Red Box. It then heads through Newcomb to Chantry Flats and Mt. Wilson, and drops back to Altadena via Sam Merrill and Millard. Expect about 62.5 miles with close to 12,000 ft of climbing on rocky, exposed mountain trail. Runners go without pacers or crew. The top two men and women earn a Sterling Silver Ticket into the AC100.
Experienced ultrarunners
Wrightwood, CA, United StatesOctober 02, 2027
Angeles Crest 100K is a loop trail race in Wrightwood, CA, United States, held on October 02, 2027. The course covers 62.5 miles and climbs 22,810 ft.
Four hours of trail work, submitted and approved by September 2, 2027. Entrants living in California south of Fresno must do it with AC100 in the Angeles National Forest; others may use a local trail organization or race.
Submission deadline: September 02, 2027
| Location | Mile | Elevation | Cutoff | Drop bags |
|---|---|---|---|---|
Loma Alta Park Start | 0.0 | 1,309 ft | — | |
Clear Creek Aid Station | 11.2 | 3,671 ft | — | |
Josephine Peak Aid Station | 15.3 | 5,413 ft | — | |
Red Box Aid Station | 24.6 | 4,678 ft | — | |
Newcomb Aid Station | 33.2 | 3,960 ft | — | |
Chantry Flats Aid Station | 39.5 | 2,228 ft | — | |
Mt Wilson Aid Station | 45.6 | 5,663 ft | — | |
Sam Merrill Aid Station | 51.2 | 4,439 ft | — | |
Millard Aid Station | 57.2 | 1,949 ft | — | |
Loma Alta Park Finish | 62.5 | 1,309 ft | — |
Cutoffs and access rules come from the race’s published information and can change. Check the official race site before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Early October can still bring hot, exposed afternoons in the San Gabriel front range
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