Free. You can start with nothing.
The Angeles Crest 100 Mile Endurance Run runs through the San Gabriel Mountains above Los Angeles, one of the first hundred-mile trail races in the country and a Western States 100 qualifier. Wildfire, winter storms, and wilderness designations in the Angeles National Forest have forced the race to change its route again and again since 2020. The 2026 edition is a new out-and-back between Loma Alta Park in Altadena and a turnaround at Mount Hillyer.
AC100 started in 1986 as one of the first five hundred-mile trail races in the country, finishing at the Rose Bowl through 1991, then Johnson Field, and, from 2008 on, Loma Alta Park in Altadena. Fires kept the race from being held in 2002 and 2009, and it moved from September to August starting in 2010. Wilderness expansions along the course forced repeated reroutes through the 2010s, and the Bobcat Fire, together with the COVID-19 pandemic, cancelled the race in 2020 and 2021. The route has changed most years since: an out-and-back to Shortcut Saddle, a finish routed via the Kenyon/Devore Trail bypassing Chantry Flats, and a Wrightwood out-and-back in 2025 after the Bridge and Eaton Fires. Winter-storm damage to Highway 2 closed two more sections in 2026, and for the first time the race starts and finishes at Loma Alta Park itself, out and back to Mount Hillyer.
| Mile | Station | Cutoff | Crew access | Bag | Pacer | Med | To next |
|---|---|---|---|---|---|---|---|
| 0.00 | Loma Alta Park | ? | ● | ○ | ○ | ? | 11.20 |
| 11.20 | Clear Creek | 8:30am | ○ | ● | ○ | ? | 4.10 |
| 15.30 | Josephine Peak | ? | ○ | ○ | ○ | ? | 9.30 |
| 24.60 | Red Box | 12:25pm | ● | ● | ○ | ? | 8.60 |
| 33.20 | Newcomb-1 | ? | ○ | ○ | ○ | ? | 9.50 |
| 42.70 | Shortcut-1 | 5:45pm | ● | ● | ○ | ? | 6.40 |
| 49.10 | Chilao-1 | 8:10pm | ● | ● | ● | ? | 3.70 |
| 52.80 | Mt Hillyer | 9:40pm | ○ | ○ | ○ | ? | 3.70 |
| 56.50 | Chilao-2 | 11:00pm | ● | ● | ● | ? | 6.40 |
| 62.90 | Shortcut-2 | 1:25am | ● | ● | ○ | ? | 9.50 |
| 72.40 | Newcomb-2 | ? | ○ | ○ | ○ | ? | 6.30 |
| 78.70 | Chantry Flats | 6:20am | ● | ● | ● | ? | 6.10 |
| 84.80 | Mt Wilson | 9:35am | ● | ● | ○ | ? | 5.70 |
| 90.50 | Sam Merrill | 11:05am | ○ | ● | ○ | ? | 6.00 |
| 96.50 | Millard | 12:50pm | ○ | ● | ○ | ? | 4.30 |
| 100.80 | Loma Alta Park | 2:00pm | ● | ● | ● | ? | ? |
2 people have been out there with a camera or a microphone.
These are other people's work and we link straight to them. Watching costs nothing and needs no account. More of them: every race we hold, on film.
Nobody sees it until we have read it. No account, no sign-in.
This changes nothing on the page on its own. Somebody checks it against the race first.
Somebody watches it before it goes anywhere near this page. What we are after is footage of this course, on the ground. If it would be just as true of any other race, it is not this.
We want the address of the file the race publishes, not the file. We download it from there so the page can say where the line came from.
We read every one of these and we write back. Every fact here carries the source it came from, and the way a wrong one gets fixed is a person checking it against what you tell us.
Cutoffs move, races get postponed, lotteries open and close. We read the race's own sources and record where every fact came from. Put your email in and we will send you what changed, and where we read it.
No account, and nothing to cancel.
What happens to your email. Nothing else. I do not sell it, and I will not send you anything except this race changing. One click gets you out.
I keep this catalog because the information is scattered and hard to trust. Telling you when it moves is the same job.
