A dog named Cactus joined the Marathon des Sables this year, running alongside participants through the Sahara Desert in Morocco. Owned by a local innkeeper, Cactus completed all but the first ...

Run, Cactus, run. Consisting of 140 miles through the Sahara Desert, the six-day Marathon des Sables in Morocco is one of the toughest races on earth.

SAHARA DESERT, Morocco — The most popular runner in one of the world’s most difficult races is, strictly speaking, not an official entrant. Or even human. A dog nicknamed Cactus suddenly ...