Two champion climbers are joined by a prizefighter, a powerlifter, a dance instructor, a surfer and others in a battle for two spots in the semi-final.

A new obstacle called "Rope Burn" challenges the third set of athletes; Two contestants become the last pair to quality for the first semi-final.

Six qualifiers compete for three spots in the championship final, with a new twist that raises the intensity; One athlete hopes a big gamble pays off.

The Beast evolves again with a new obstacle called "Rib Cage Row," and two of nine contenders will grab the first spots in the second semifinal.

The "Crash Pads" return, and a twisty new obstacle greets a group that includes the competition's youngest athlete and a cancer survivor.

A group that includes a war hero and a survivor of Rwandan genocide confronts the hungry Beast with the last two semifinal berths at stake.

With three spots left in the championship final, the second set of semifinalists faces the brutal task of racing through the entire Beast in one run.

Of the 54 who dared to stare down the Beast, six remain. Only one will best the competition to claim $50,000 and the "Ultimate Beastmaster" crown