Watch 100 Miles to 40

The Western States Endurance Run winds 100 miles over the Sierra Nevada Mountains along an old gold miner's path. Racers get one day to finish. No stopping. No sleeping. Just a pair of trail running shoes and the ability to ignore an unbelievable amount of pain. At night, it's like running over Mount McKinley, alone, with blinders on. What will you do to remember your next birthday?

100 Miles to 40 is a 2013 documentary with a runtime of 1 hour and 7 minutes.