Some unseasonably cool temperatures made for some cold water at some of the obstacles in Saturday’s Tough Mudder Indiana.

As part of the annual Dubai Fitness Challenge, Spartan Race and Tough Mudder will take over the Wadi Hub at Hatta Resorts on ...

U.S. Customs and Border Protection (CBP) is hosting a recruiting event at Tough Mudder Chicago on August 23rd and 24th, with ...

Tough Mudder is known around the world for it's 10+ mile grueling obstacle course challenges, designed to test physical strength, mental grit and teamwork, with classic obstacles including fire ...

It was all part of the appeal of the 10-kilometer race put on by Tough Mudder, a race organizer that boasts about the grimy challenge of its obstacle courses. Umbaugh and her friends celebrated ...

When Nicole Villagran signed up to do her first Tough Mudder course, she thought she’d be getting an entertaining, if messy, workout. She got that — and much more. Villagran has spent the past ...

"Tough Mudder, in general, will help you prepare for any obstacle you may face in life," said Bishop. "It really tailors to your fears, whether it be heights, darkness, you know, water.

Sunday, September 3, 4 p.m. – Tough Mudder X Finals, Twin Cities, Minnesota Saturday, October 28, 2 p.m. – Toughest Mudder Midwest, Chicago, Illinois ...

Tough Mudder has participants run 10- to 12-mile courses and obstacles like Electroshock Therapy (running through live wires) and the Mud Mile (running through waist-deep mud).

Dean said Tough Mudder had signed up 70 franchisees in the U.S. and could do as many as 1,000 in the U.S. and another 1,000 abroad. Follow USA TODAY reporter Nathan Bomey on Twitter @ NathanBomey.

Nolan Kombol, head of course design for Tough Mudder, tells SI.com the 11-month process of reevaluating the group’s 40-plus obstacles was the first broad sweep of changes in course history.

Colorado Tough Mudder events are scheduled Aug. 10-11 at Sterling Ranch near Chatfield Reservoir (three event types, offered both days), with events at 20 other U.S. locations this year.