The Marathon des Sables has been described as the toughest race on earth. The race consist of one long walk – 254 km - across one of the hottest regions on earth – the Sahara desert. The first Marathon des Sables was held in 1986. This year marks the 26th anniversary of the race.
A total of 849 competitors set off on this grueling six-day, 150 mile endurance race across the Sahara in Morocco on April 3, 2011. (See last year’s pictures)
Photos: AFP/GETTY IMAGES
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