That expedition had a major influence on the adventurous Frenchman , who realized that other people would be interested in taking on similar challenges . The first edition of the Marathon des Sables began several years . 1,024 runners will cover 350 kilometers in six stages . The epic race is billed as the toughest footrace on Earth . It has to be entered Sunday in advance .
The first edition of the Marathon des Sables began several years . 1,024 runners will cover 350 kilometers in six stages . The epic race is billed as the toughest footrace on Earth . It has to be entered Sunday in advance .