Season 5 Episodes16
Cast3

Bob Harper
Self

Alison Sweeney
Self - Host

Jillian Michaels
Self
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Ranked #12 of 16 in Season 5•−0.1 vs season avg
After revisiting the hospital to check in on their progress, the remaining players face off in one of the biggest challenges in "Biggest Loser" history -- they must fly across a ravine on zip-lines and collect flags. One player gets the chance to give immunity

Bob Harper
Self

Alison Sweeney
Self - Host

Jillian Michaels
Self
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"Contestants Tackle One of the Biggest Challenges in Show's History" is episode 10 of The Biggest Loser season 5. It scored 6.2/10 from 9 votes, ranking #12 of 16 episodes this season (season average 6.3). It aired on March 4, 2008.