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