Extreme Marathons

The Marathon of the Sands takes place over six grueling days, and stretches 156 miles, the equivalent to six regular marathons. The longest single stage is 52 miles long.

Marathon des Sables, Ouarzazate, Morocco
The Marathon of the Sands takes place over six grueling days, and stretches 156 miles, the equivalent to six regular marathons. The longest single stage is 52 miles long.

Pierre Verdy / AFP / Getty|