What is MdS? - Marathon des Sables 2025

MdS

What is MdS?

What is the MdS?

The Marathon des Sables is the stuff of legends – a truly gruelling multi-stage adventure in one of the world’s most inhospitable environments, the Sahara Desert. It is indisputably the Toughest Footrace on Earth. Physically, it is six days’ running over 250 kms (156 miles) across endless sand dunes, rocky jebels and white-hot salt plains, carrying what you need to survive on your back. Mentally, it is the ultimate challenge – an experience like no other in the world.

The MdS is a six-day ‘ultra-marathon’ or ‘ultra’ run over 150 to 156 miles (254 kms). But it’s not just the distance that makes it the toughest footrace on the planet. The terrain is harsh – it will shift your perspective. The heat is intense – it will demand your respect. You will carry your pack, but bed down in communal tents sleeping eight in a bivouac village. You will share stories, support, laughter and make life-long friends.

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