A rundown of some of the best obstacle racing events in the U.S. in 2017.
Scenes from the Spartan Race World Championships that took place on Oct. 2.
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.