Check out details of THE BIGGEST LOSER “812″ Season 8 Episode 12 airing on Tuesday December 1 (8-10 p.m. ET).
Episode Synopsis: THE BIGGEST LOSER “812″ Season 8 Episode 12 – Last season’s finalists return to cheer the final four on as they face their toughest challenge: a marathon.
Watch any The Biggest Loser episodes here.
(Photos: Courtesy of NBC)
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