RacesSouthern California
Angeles Crest 100
Demand
4 out of 5
How much it asks
Worth
4 out of 5
Worth the flight + fee
Altadena, California, United States

Scorecard · is it worth it?
Worth the flight if the mountains match what you want.
The card
Angeles Crest is one of the original American 100s, and in 2026 it is not the point-to-point people recite. Highway 2 storm damage and the Eaton Fire closed the Wrightwood start. AC100's own status pages say the race starts and finishes at Loma Alta Park in Altadena, the first Altadena start in race history, out to the high country and back, threading around fire closure. Demand is 4 because 100 miles of San Gabriel trail, heat, rock, and a reroute still constitute a mountain 100. It is not 5 because the altitude is modest and because a course held together with tunnels and truck roads is a different ask than the classic Wrightwood line.
Worth is 4. We are scoring the 2026 race that exists, not the poster of the race that cannot. The San Gabriels are still a reason to fly if you live outside Southern California and you want this particular wilderness-over-Los-Angeles feeling. They are not a reason to pretend the historic point-to-point is intact. Organization confidence is high: ac100.com has been unusually explicit about closures, maps, and cutoffs. That is the opposite of hiding a bad year.
Date and fee stay on official and UltraSignup pages. If your identity is the Wrightwood start, wait for a year they can go back. If your identity is 100 miles in the San Gabriels, this is still a destination, with an asterisk written by the forest, not by us.
The 2026 line uses Loma Alta, the Gabrielino, Josephine, Red Box, a turnaround near Mt Hillyer, then Chantry, Wilson, Mueller Tunnel, Sam Merrill, Millard. That is a lot of names for a year that could not start in Wrightwood. AC100 published the change instead of pretending Highway 2 was open. We will not invent a 2026 date or a fee; ultrasignup and ac100.com have both. Heat still decides Southern California 100s even in October. Rock still decides the descents. History still matters, and history is not a substitute for the course that will actually be marked.
Who it is for
Runners who want a Southern California mountain 100 with history, heat, and a 2026 course that admits fire and highway damage.
Who should skip
Anyone who will be angry that it is not Wrightwood-to-Altadena this year. The 2026 card is the Altadena out-and-back.
Elevation
Tap or hover for miles, clock, and aidft
Bottom ticks are aid. Longest gap 11.2 mi.
- Start
- 1,299 ft396 m
- Finish
- 1,299 ft396 m
- Net
- 0 ft0 m
- Longest climb
- 2,956 ft901 m
Start and finish are within 400 ft. Treat net as a loop.
Weekend
Official handbook facts
- Start
- 05:00
- Course file
- Open
AC100 official full-course / 2026 GPX · retrieved 2026-09-06 (repo record)
Field
Last editions · 100M scored distance
Field evidence: who showed up, who finished, how long. DNF is that evidence, not a difficulty score. Public results, scored distance only.
2025
- Starters
- 204
- Finishers
- 103
- DNF
- 50%
- Win
- 21:23:43
- Median
- 31:43:03
2025 field from the official Finish Splits table with finish and DNF rows (103 finishers, 101 DNF, 204 starters). 2025 fields are from the Wrightwood course, not the 2026 Altadena course.
Overall field only. Not a pro or sponsored subset.
Climate
Typical October at the start area · historical race-week weather
- Typical high
- 81°F (27°C)
- Typical low
- 60°F (16°C)
- Typical precip
- 0.70 in (17 mm) / October
- Days with rain
- 10% of days
- High point
- 9,301 ft (2,835 m)
2015–2024 October means at the start / massif. · Open-Meteo ERA5 / climate · retrieved 2026-09-06
Dimensions
Ten 1–5 scores with a one-line why. Organization has a separate confidence tag.
Supporting dimensions · organization confidence high
A founding American 100, 2026 as an Altadena out-and-back instead of Wrightwood point-to-point.
San Gabriel climbing is steep and repeated. The 2026 profile is a fire-and-road-closure version.
Rocky front-range trail, fire reroutes, technical descents. Not a canal.
Southern California mountains: heat on the front side, cold at night, October in 2026.
High points historically around 9,300 ft. Air is not the race; heat and rock are.
Hwy 2 closures, Eaton Fire scar, start/finish at Loma Alta. The logistics are the 2026 story.
One of the original 100s. The field still knows what AC means.
Unusually public about course changes. High confidence on communication, not on a stable course.
A classic 100 you fly for if you want the San Gabriels, not if you want a pristine point-to-point.
Angeles National Forest, tunnels, Ridgeline. Beautiful and burned.
| Dimension | Score | Why |
|---|---|---|
Distance & format How much does the advertised distance and format actually ask? | 4 out of 5 | A founding American 100, 2026 as an Altadena out-and-back instead of Wrightwood point-to-point. |
Vertical How serious is the climbing, not just the mile marker? | 4 out of 5 | San Gabriel climbing is steep and repeated. The 2026 profile is a fire-and-road-closure version. |
Technicality Hands, poles, route-finding, or just a long dirt road? | 4 out of 5 | Rocky front-range trail, fire reroutes, technical descents. Not a canal. |
Climate Heat, monsoon, ice, or a friendly summer afternoon? | 4 out of 5 | Southern California mountains: heat on the front side, cold at night, October in 2026. |
Altitude Does the air change the race, or is it a talking point? | 2 out of 5 | High points historically around 9,300 ft. Air is not the race; heat and rock are. |
Logistics How hard is the weekend around the race: travel, crew, lodging, rules? | 4 out of 5 | Hwy 2 closures, Eaton Fire scar, start/finish at Loma Alta. The logistics are the 2026 story. |
Prestige & field Does the start list and history change what the weekend feels like? | 4 out of 5 | One of the original 100s. The field still knows what AC means. |
Organization From public evidence, does the event look competently run? | 4 out of 5 | Unusually public about course changes. High confidence on communication, not on a stable course. |
Value Entry fee, travel tax, and lottery friction versus what you get on course. | 4 out of 5 | A classic 100 you fly for if you want the San Gabriels, not if you want a pristine point-to-point. |
Adventure & scenery Would you fly for the place even if nobody kept score? | 4 out of 5 | Angeles National Forest, tunnels, Ridgeline. Beautiful and burned. |