Ultramarathon Facts

A man called Dean Karnazes ran 350 miles in 80 hours with no sleep, ran a marathon in the South Pole in -25 °C temperatures without snowshoes, and ran 50 marathons in 50 states in 50 days.

During the Gobi Desert ultramarathon, a stray dog ran over 77 miles alongside British runner Dion Leonard. After the race, she went missing, but with 20 volunteers and a two-week search, Dion found her and now happily lives with him in Edinburgh.