The 4 Deserts is the world's leading rough-country endurance footrace series. A unique collection of world-class events that take place over 7 days and 250 kilometers in the largest and most forbidding deserts on the planet.

Competitors are challenged to go beyond the limits of their physical and mental endurance. Racing self-supported in the most inhospitable climates and formidable landscapes, they must carry all their own equipment and food and are only provided with drinking water and a place in a tent each night to rest.

The series, named again by TIME magazine in 2010 as one of the world's Top 10 Endurance Competitions, comprises the Atacama Crossing in Chile, the Gobi March in China, the Sahara Race in Egypt and The Last Desert in Antarctica.