The 39-year-old future NFL Hall of Famer put his speed, strength and stamina to the test on Oct. 2 during the Spartan Race World
Former competitive runner Laura Messner finds her groove in obstacle course racing
Being a fast and nimble runner in the 3,000-meter steeplechase on the track is paying huge dividends in obstacle racing for Max King and
Here are photos from the 2014 Spartan World Championships in Vermont.
The 16-mile course in Vermont pushes racers to their limits.
Dallner nearly died in a climbing accident three years ago, and then he became an obstacle course racer.
The former cross country runner is now one of the top competitors on the obstacle racing scene.
The Australian athlete talks about how she trains for long-distance obstacle races.
Alex Roudayna is an emerging international obstacle racing star.