What is the Marathon des Sables.

It is billed as "the World's toughest footrace".
Go to http://www.darbaroud.com/ hit the Marathon Des Sables tab.
Then hit "Race Presentation" button and about 1/3rd down just click one of the pdf files and the "Race Presentation" will down load. Scroll throught the first half as it is in French. The second half will explain it in good detail. The way I look at if an Event requires you have to carry a Flare Pistol and a snake bite kit count me in!