RunUltra represents the Marathon des Sables registration

The Marathon des Sables is ranked by the Discovery Channel as the toughest footrace on earth. Known simply as the MdS, the race is a gruelling multi-stage adventure through a formidable landscape in one of the world’s most inhospitable climates - the Sahara desert. The rules require you to be self-sufficient, to carry with you on your back everything except water that you need to survive. You are given a place in a tent to sleep at night but any other equipment and food must be carried. Register your interest now.