Season 4
Episodes • 2012

1. Southwest Qualifying Round (1)
60 minPeople from the Southwest compete for a chance at the world's most difficult obstacle course.
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2. Southwest Qualifying Round (2)
60 minPeople from the Southwest compete for a chance at the world's most difficult obstacle course.
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3. Southwest Regional Finals
60 minThe top 30 finishers from the Southwest qualifying round take on an even more challenging obstacle course to advance to the national finals.
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4. Midwest Regional Qualifying Round (1)
60 minMidwest competitors try to qualify for the national contest.
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5. Midwest Regional Qualifying Round (2)
60 minMidwest competitors try to qualify for the national contest.
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6. Midwest Regional Finals
60 minThe 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.
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9. Northeast Region Finals
60 minThe top 30 Northeast finishers take on a more challenging course.
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10. Northwest Regional Qualifying Round (1)
60 minContestants from the Northwest compete.
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11. Northwest Regional Qualifying Round (2)
60 minContestants from the Northwest compete.
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13. Midsouth Regional Qualifying Round (1)
60 minCompetitors from the Midsouth region.
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14. Midsouth Regional Qualifying Round (2)
60 minCompetitors from the Midsouth region.
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16. Southeast Regional Qualifying Round (1)
60 minAthletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.
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17. Southeast Regional Qualifying Round (2)
60 minAthletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.
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18. Southeast Regional Finals
60 minThe top 30 Southeast finishers compete on a more challenging course..
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19. Las Vegas Finals (1)
60 minOne hundred competitors attempt the most-difficult obstacle course.
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20. Las Vegas Finals (2)
60 minStage 1 of the most-difficult obstacle course continues.
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21. Las Vegas Finals (3)
60 minStage 1 of the most difficult obstacle course continues.
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22. Las Vegas Finals (4)
60 minStage 1 of the 8 obstacle course will challenge even the most skilled competitors.
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24. Las Vegas Finals (6)
60 minUltimate challenges including the Spider Flip and the Double Salmon Ladder.
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25. Best of Southwest
60 minPreviously unseen footage includes top finishers from preliminary rounds tackling a challenging obstacle course.
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26. Best of the Midwest
60 minCompetitors face a challenging obstacle course in hope of landing a spot in the finals.
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27. Best of Northeast
60 minTop contenders tackle a challenging obstacle course in hope of moving to the final round.
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28. Best of Northwest
60 minCompetitors face a challenging obstacle course in hope of landing a spot in the finals.
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30. Best of Southeast
60 minFinalists take on a four-stage course. Challenges include a "jumping spider" and a "spinning bridge."
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32. Best of the Finals (2)
60 minTop finishers from the regionals advance to the final round.
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