In the Copper Canyons of Mexico there is a tribe of Native Americans called the Tarahumarawho are renown for their athletic abilities, especially in long distance running.
This hidden tribe of superathletes have developed a tradition of long distance running up to 200 miles (320km) in one session. There are reports of Tarahumara runners who ran 696km in one stretch.
In 1993, the Leadville Trail 100 ultramarathon organisers brought in five Tarahumara runners to compete with the world’s best endurance athletes. The winner was 52 year old Tarahumaran named Victoriano. He beat the first non-Tarahumaran finisher by a full hour.
Read more about the Tarahumara here.