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