Angeles Crest 100

Cross the San Gabriel mountain range in one single push during the Angeles Crest 100.

Trail Running Extreme

158 km
5.5 km
6.9 km
1 day +
Low Point
356 m
High Point
2.8 km
Angeles Crest 100 Map

The Angeles Crest 100 traverses the primitive wilderness of the San Gabriel mountains, crossing the range from east to west in a single push. Even though the megalopolis of Los Angeles bounds the San Gabriels on the western side, these mountains retain "much of the natural beauty, if not the primitive wilderness of yesteryear," according to


The Angeles Crest 100 (AC100 for short) is an extremely challenging ultramarathon that forms part of the Western Slam of ultra running. While the course was originally envisioned as a 30-hour run, "due to its difficulty, the official cut-off time is set to 33 hours." Race entry is limited to just 150 people, and runners must qualify " by completing at least a 50-mile run in the previous year," according to Wikipedia.

The route crosses the San Gabriel mountains, utilizing lengthy portions of the Pacific Crest Trail, the Silver Moccasin Trail, and the Gabrielino trail to do so. The course also climbs Mount Baden-Powell, which soars to a height of 9,407 feet. Since the run ends at around 1,358 feet in Altadena, the amount of elevation change is immense! According to FATMAP, the standard AC100 gains 18,000 feet of elevation and loses over 22,500 feet along its length.

These mountains are steep, wild, and incredibly rugged. Only the hardiest of ultrarunners has a chance of coming in under the cutoff time. But the elite of the elite who cross the finish line in under 24 hours (only 15-20% of participants) will receive a solid sterling silver belt buckle as their reward.




Medium Exposure

2 out of 4

The trail contains some obstacles such as outcroppings and rock which could cause injury.


4 out of 4

In the high mountains or remote conditions, all individuals must be completely autonomous in every situation.

Best time to visit

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