In 2013, two NFL players were pitted against a pair of cheetahs called Jenna and Nave for a Nat Geo Wild documentary. The Chicago Bears’ Devin Hester won his race by milliseconds.
U.S. Navy Seal Scott Helvenston beat a chimpanzee in an obstacle-course race on reality show Man vs. Beast in 2003. Another competitor lost a hot-dog-eating contest to a bear.
A “Man vs. Horse” marathon has been held annually in a rural town in Wales since 1980. The endurance race has been won by a human only twice in its 37-year history.
This appears in the July 03, 2017 issue of TIME.