Wouter van den Heever This is a documentary about a long distance trail race annually held in the USA. An excellent sports film.This movie is a must see for any endurance athlete, or anyone still thinking of pushing their body in an endurance challenge.It's exhilarating and inspirational. If you are a trail or mountain runner, it will put new life into your future runs.The outcome is unknown until the last 10 min of the movie.It is obvious that JB Benna, the Director of Unbreakable, has a huge passion for endurance events and the human spirit required to compete at the top end, based on the footage he filmed of the top 4 competitors prior to, during and after the actual event in June 2010.