Season 4 (2012)
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Episodes 32
Southwest Qualifying Round (1)
People from the Southwest compete for a chance at the world's most difficult obstacle course.
Read MoreSouthwest Qualifying Round (2)
People from the Southwest compete for a chance at the world's most difficult obstacle course.
Read MoreSouthwest 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.
Read MoreMidwest Regional Qualifying Round (1)
Midwest competitors try to qualify for the national contest.
Read MoreMidwest Regional Qualifying Round (2)
Midwest competitors try to qualify for the national contest.
Read MoreMidwest 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.
Read MoreNortheast Regional Qualifying Round (1)
Athletes from the Northeast compete.
Read MoreNortheast Regional Qualifying Round (2)
Athletes from the Northeast compete.
Read MoreNortheast Region Finals
The top 30 Northeast finishers take on a more challenging course.
Read MoreNorthwest Regional Qualifying Round (1)
Contestants from the Northwest compete.
Read MoreNorthwest Regional Qualifying Round (2)
Contestants from the Northwest compete.
Read MoreNorthwest Regional Finals
The top 30 Northwest finishers compete.
Read MoreMidsouth Regional Qualifying Round (1)
Competitors from the Midsouth region.
Read MoreMidsouth Regional Qualifying Round (2)
Competitors from the Midsouth region.
Read MoreMidsouth Regional Finals
The top 30 Mid-south competitors compete.
Read MoreSoutheast Regional Qualifying Round (1)
Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.
Read MoreSoutheast Regional Qualifying Round (2)
Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.
Read MoreSoutheast Regional Finals
The top 30 Southeast finishers compete on a more challenging course..
Read MoreLas Vegas Finals (1)
One hundred competitors attempt the most-difficult obstacle course.
Read MoreLas Vegas Finals (2)
Stage 1 of the most-difficult obstacle course continues.
Read MoreLas Vegas Finals (3)
Stage 1 of the most difficult obstacle course continues.
Read MoreLas Vegas Finals (4)
Stage 1 of the 8 obstacle course will challenge even the most skilled competitors.
Read MoreLas Vegas Finals (5)
Top finishers challenge Mount Midoriyama.
Read MoreLas Vegas Finals (6)
Ultimate challenges including the Spider Flip and the Double Salmon Ladder.
Read MoreBest of Southwest
Previously unseen footage includes top finishers from preliminary rounds tackling a challenging obstacle course.
Read MoreBest of the Midwest
Competitors face a challenging obstacle course in hope of landing a spot in the finals.
Read MoreBest of Northeast
Top contenders tackle a challenging obstacle course in hope of moving to the final round.
Read MoreBest of Northwest
Competitors face a challenging obstacle course in hope of landing a spot in the finals.
Read MoreBest of Midsouth
Athletes face the eight obstacles of Stage 1 in Las Vegas.
Read MoreBest of Southeast
Finalists take on a four-stage course. Challenges include a "jumping spider" and a "spinning bridge."
Read MoreBest of the Finals (1)
Athletes compete in the finals in Las Vegas.
Read MoreBest of the Finals (2)
Top finishers from the regionals advance to the final round.
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