Are You Tough Enough
The obstacle course craze is taking over America. This year some 1.5 million people will enter an event. But behind all the dirty fun is a nasty business and legal battle between entrepreneurs looking to cash in.
Tough Mudder Exposed
A trailer for "Playing Dirty," Outside's November cover story about the popular obstacle race company, Tough Mudder.
When 34-year-old Hobie Call lost the Death Race in August 2011, he also lost his chance to win $100,000 for sweeping the Spartan Races. So why does he keep competing? Brigid Mander, October 2011
Tough Mudder Photo Gallery
Andrew Hetherington shoots the action at Tough Mudder Toronto.
Yes You Can: Run a Tough Mudder
Welcome to the frozen, on fire, wet, barb-wired world of Tough Mudder—where adventure racing starts to look a lot more like hazing. Erin Beresini, December 2011 (online)
The masochistic sport of obstacle racing has exploded in popularity. Nick Heil tries to understand why so many are signing up for the misery. Nick Heil, January 2012
The Top 5 Obstacle Racing Essentials
We asked two of the sport's top athletes about the gear that helps them get onto the podium. Stephen Regenold, July 2012 (online)
Can Mud Runs Make Me Sick?
My mom always said to stay inside during dust storms because the dirt could make me sick. Can racing a muddy, dusty event make me ill? Erin Beresini, August 2012 (online)
Could Tough Mudder's Electric Shocks Kill Me?
Tough Mudder says their Electroshock Therapy obstacle delivers a 10,000-volt electric shock. Can a human survive that, or is it a sham? Erin Beresini, July 2012 (online)