The final four contestants go home to reunite with family and friends, and learn that when they return to the ranch, they'?ll face their toughest challenge yet -- running a full (26.2 mile) marathon. It'?s a daunting challenge, but cheering them along the way will be some familiar faces from the previous season -- season seven winner Helen Phillips and finalists Tara Costa and Mike Morelli, plus a surprise visitor to cheer Rudy on. Later, it'?s the very last last chance workouts with trainers Bob Harper and Jillian Michaels before a final weigh in determines who the two definite finalists will be -- and which two contestants fall below the dreaded yellow line, leaving America to vote which one will be the third finalist to compete for the grand prize of $250,000. Host Alison Sweeney also stars.
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