GILFORD - Dr. Barry Chapin has run a few marathons in his life, but he'd never participated in an obstacle endurance run, nor had he ever run through a trap of wires radiating 10,000 volts hanging ...

For two action-packed days in the Hatta mountains, participants can take part in an epic obstacle and trail race before the ...

OK, you’re gonna face some of your worst fears. Like water. Tight spaces. Water in tight spaces. Electric shock. Heights. You're going to test your endurance like you do when running a long race, but ...

In this week’s issue of TIME, we explore the cult of Tough Mudder, the obstacle-course racing event held across the country. Tough Mudder was launched in 2010 and has seen rapid growth in people ...