The Angeles Crest 100 is a 100-mile endurance race through the mountains from Wrightwood to Pasadena. The runners take off in the dark at 5 a.m. and run up and down trails. The winners finish in about 19 hours. Most take more than 24 hours. "It's a really long way," a runner says in the film based on the 2013 race by Alexandre Hatlestad-Shey & David Bret Egen for Trillion Pictures.
Related: Hmm, running at night alone in the San Gabriels. Better be able to outrun these guys.