Tough Mudder shares the secret to building the perfect obstacle course The new obstacle courses set to challenge the best of the best in Tough Mudder's endurance races this year focus heavily on ...

Don Kannenberg is a mild-mannered accountant who busts out of his office on weekends and turns into superman. Kannenberg, 57, of Avon, pursues the extreme sport of obstacle course racing. Competitors ...

The foreboding incline loomed ahead, challenging visitors to the new Gatling Gauntlet obstacle course to climb it. They had already scampered up the cargo net climb, flopped over a wooden wall and ...