Watch: Dave Mackey crushes 100-mile trail race after losing leg
Twenty months after having his left leg amputated, ultra-runner Dave Mackey did what others deemed impossible: He ran the Leadville 100 -- a grueling trail race at 10,000+ feet above sea level -- in 24 hours, 55 minutes, 15 seconds. Not only that, but by finishing that race, he completed the entire Leadville Race Series, meaning in three months, he [...]