World’s Toughest Race: Marathon Des Sables

James Cracknell explains what the Marathon des Sables is and what conditions you have to endure in order to succeed.UNSTOPPABLE? THE JAMES CRACKNELL TRIOLOGY Three Films About One Mans Endurance Thursdays at 9pm from 24th March - Discovery UKFor more info go to: http://www.discoveryuk.com/the-loop/toughest-race-on-earth/