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Southeast Regional Qualifying Round (1)
Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.
More from Season 4
Episode 1
Southwest Qualifying Round (1)
People from the Southwest compete for a chance at the world's most difficult obstacle course.
1h 2012-05-20
Episode 2
Southwest Qualifying Round (2)
People from the Southwest compete for a chance at the world's most difficult obstacle course.
1h 2012-05-20
Episode 3
Southwest Regional Finals
The top 30 finishers from the Southwest qualifying round take on an even more challenging obstacle course to advance to the national finals.
1h 2012-05-22
Episode 4
Midwest Regional Qualifying Round (1)
Midwest competitors try to qualify for the national contest.
1h 2012-05-27
Episode 5
Midwest Regional Qualifying Round (2)
Midwest competitors try to qualify for the national contest.
1h 2012-05-27
Episode 6
Midwest Regional Finals
The top 30 qualifiers compete for a chance to move on to the national finals and tackle a harder course in hope of getting the $50,000 prize.
1h 2012-05-21
