2013 April Fool’s Challenge, Pittsburgh

Mud. Mud everywhere. That's what awaits participants in the April Fool’s Challenge. The race stretches across more than four miles of obstacles, forcing runners to scale walls and pass through the frigid waters of Deer Creek. After finishing their muddy trek, runners arrive back at the starting point, Founders Field, home of Pittsburgh Harlequins Rugby. Here, they can take a much-needed shower, wind down at the afterparty, and celebrate the fact that they've just done a bit of good—proceeds from the challenge benefit the Pittsburgh Harlequins Youth Rugby Mentoring Program, which uses rugby to teach underprivileged youth accountability, responsibility, and teamwork.