Season 4
Episodes
1. Southwest Qualifying Round (1)
2012-05-20
People from the Southwest compete for a chance at the world's most difficult obstacle course.
2. Southwest Qualifying Round (2)
2012-05-20
People from the Southwest compete for a chance at the world's most difficult obstacle course.
3. Southwest Regional Finals
2012-05-22
The top 30 finishers from the Southwest qualifying round take on an even more challenging obstacle course to advance to the national finals.
4. Midwest Regional Qualifying Round (1)
2012-05-27
Midwest competitors try to qualify for the national contest.
5. Midwest Regional Qualifying Round (2)
2012-05-27
Midwest competitors try to qualify for the national contest.
6. Midwest Regional Finals
2012-05-21
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.
7. Northeast Regional Qualifying Round (1)
2012-05-28
Athletes from the Northeast compete.
8. Northeast Regional Qualifying Round (2)
2012-05-29
Athletes from the Northeast compete.
9. Northeast Region Finals
2012-06-03
The top 30 Northeast finishers take on a more challenging course.
10. Northwest Regional Qualifying Round (1)
2012-06-03
Contestants from the Northwest compete.
11. Northwest Regional Qualifying Round (2)
2012-06-04
Contestants from the Northwest compete.
12. Northwest Regional Finals
2012-06-05
The top 30 Northwest finishers compete.
13. Midsouth Regional Qualifying Round (1)
2012-06-10
Competitors from the Midsouth region.
14. Midsouth Regional Qualifying Round (2)
2012-06-10
Competitors from the Midsouth region.
15. Midsouth Regional Finals
2012-06-11
The top 30 Mid-south competitors compete.
16. Southeast Regional Qualifying Round (1)
2012-06-12
Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.
17. Southeast Regional Qualifying Round (2)
2012-06-17
Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.
18. Southeast Regional Finals
2012-06-17
The top 30 Southeast finishers compete on a more challenging course..
19. Las Vegas Finals (1)
2012-06-18
One hundred competitors attempt the most-difficult obstacle course.
20. Las Vegas Finals (2)
2012-06-19
Stage 1 of the most-difficult obstacle course continues.
21. Las Vegas Finals (3)
2012-06-24
Stage 1 of the most difficult obstacle course continues.
22. Las Vegas Finals (4)
2012-06-24
Stage 1 of the 8 obstacle course will challenge even the most skilled competitors.
23. Las Vegas Finals (5)
2012-06-25
Top finishers challenge Mount Midoriyama.
24. Las Vegas Finals (6)
2012-06-26
Ultimate challenges including the Spider Flip and the Double Salmon Ladder.
25. Best of Southwest
2012-07-08
Previously unseen footage includes top finishers from preliminary rounds tackling a challenging obstacle course.
26. Best of the Midwest
2012-07-08
Competitors face a challenging obstacle course in hope of landing a spot in the finals.
27. Best of Northeast
2012-07-08
Top contenders tackle a challenging obstacle course in hope of moving to the final round.
28. Best of Northwest
2012-07-09
Competitors face a challenging obstacle course in hope of landing a spot in the finals.
29. Best of Midsouth
2012-07-10
Athletes face the eight obstacles of Stage 1 in Las Vegas.
30. Best of Southeast
2012-07-16
Finalists take on a four-stage course. Challenges include a "jumping spider" and a "spinning bridge."
31. Best of the Finals (1)
2012-07-17
Athletes compete in the finals in Las Vegas.
32. Best of the Finals (2)
2012-07-24
Top finishers from the regionals advance to the final round.