Air date: 2012-05-20

Runtime: 60 min

People from the Southwest compete for a chance at the world's most difficult obstacle course.

Air date: 2012-05-20

Runtime: 60 min

People from the Southwest compete for a chance at the world's most difficult obstacle course.

Air date: 2012-05-22

Runtime: 60 min

The top 30 finishers from the Southwest qualifying round take on an even more challenging obstacle course to advance to the national finals.

Air date: 2012-05-27

Runtime: 60 min

Midwest competitors try to qualify for the national contest.

Air date: 2012-05-27

Runtime: 60 min

Midwest competitors try to qualify for the national contest.

Air date: 2012-05-21

Runtime: 60 min

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.

Air date: 2012-05-28

Runtime: 60 min

Athletes from the Northeast compete.

Air date: 2012-05-29

Runtime: 60 min

Athletes from the Northeast compete.

Air date: 2012-06-03

Runtime: 60 min

The top 30 Northeast finishers take on a more challenging course.

Air date: 2012-06-03

Runtime: 60 min

Contestants from the Northwest compete.

Air date: 2012-06-04

Runtime: 60 min

Contestants from the Northwest compete.

Air date: 2012-06-05

Runtime: 60 min

The top 30 Northwest finishers compete.

Air date: 2012-06-10

Runtime: 60 min

Competitors from the Midsouth region.

Air date: 2012-06-10

Runtime: 60 min

Competitors from the Midsouth region.

Air date: 2012-06-11

Runtime: 60 min

The top 30 Mid-south competitors compete.

Air date: 2012-06-12

Runtime: 60 min

Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.

Air date: 2012-06-17

Runtime: 60 min

Athletes and everyday people compete for a chance to take on the World's Most Difficult Obstacle Course.

Air date: 2012-06-17

Runtime: 60 min

The top 30 Southeast finishers compete on a more challenging course..

Air date: 2012-06-18

Runtime: 60 min

One hundred competitors attempt the most-difficult obstacle course.

Air date: 2012-06-19

Runtime: 60 min

Stage 1 of the most-difficult obstacle course continues.

Air date: 2012-06-24

Runtime: 60 min

Stage 1 of the most difficult obstacle course continues.

Air date: 2012-06-24

Runtime: 60 min

Stage 1 of the 8 obstacle course will challenge even the most skilled competitors.

Air date: 2012-06-25

Runtime: 60 min

Top finishers challenge Mount Midoriyama.

Air date: 2012-06-26

Runtime: 60 min

Ultimate challenges including the Spider Flip and the Double Salmon Ladder.

Air date: 2012-07-08

Runtime: 60 min

Previously unseen footage includes top finishers from preliminary rounds tackling a challenging obstacle course.

Air date: 2012-07-08

Runtime: 60 min

Competitors face a challenging obstacle course in hope of landing a spot in the finals.

Air date: 2012-07-08

Runtime: 60 min

Top contenders tackle a challenging obstacle course in hope of moving to the final round.

Air date: 2012-07-09

Runtime: 60 min

Competitors face a challenging obstacle course in hope of landing a spot in the finals.

Air date: 2012-07-10

Runtime: 60 min

Athletes face the eight obstacles of Stage 1 in Las Vegas.

Air date: 2012-07-16

Runtime: 60 min

Finalists take on a four-stage course. Challenges include a "jumping spider" and a "spinning bridge."

Air date: 2012-07-17

Runtime: 60 min

Athletes compete in the finals in Las Vegas.

Air date: 2012-07-24

Runtime: 60 min

Top finishers from the regionals advance to the final round.