A new obstacle called "Rope Burn" challenges the third set of athletes. Two contestants become the last pair to qualify for the first semifinal.

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.