All The Wild Horses follows five international riders from the USA, Canada, South Africa, Ireland and the UK as they compete in the Mongol Derby horse race in Mongolia. This multi-horse, multi-station race over a 1000 kilometers of Mongolian steppe is the longest and toughest horse race on the planet. The riders are out on their own and navigate with GPS from horse station to horse station, where they change their horses every 40 kilometers, staying the nights out in the wild or with nomad families along the way.
After a dramatic start, the first casualties are soon medivaced from the field, but this proves to be only a prelude for what's to come over 8 grueling race days. 22-year-old American rider Devan Horn battles heat, exhaustion and wild dogs as she takes the lead early on, trailed relentlessly by Irish jockeys Donie Fahy and Richie Killoran. The race throws up twists and turns as it builds to an unexpected, nail-biting finish.