Fantastic feature-length documentary about a unique trail running ultra race. Equal parts hilarity (part of the entry fee one year was a pair of socks) and serious feats of extreme endurance, it's mesmerizing viewing. Watched from the comfort of a treadmill you'll be grateful that you aren't climbing up the "Rat Jaw" section of the race where runners legs are lacerated by saw briars. Only a handful of athletes have ever completed the 100 mile, 5 lap race. Sure to make your workout feel achievable!