The contestants of Season 15 return for the live finale, and one of the three determined finalists will be crowned The Biggest Loser.
The contestants compete in the first Biggest Loser Triathlon, and the three finalists are determined after this week's weigh-in.
The contestants meet with stylists Tim Gunn and Ken Paves to get new styles for their new looks.
The contestants travel to Park City, Utah to train with world-class athletes at the Olympics training center.
The eliminated contestants return to the ranch for a second chance to get back into the competition.
The competition moves to singles, and a double red line means that two players are headed home after this week's weigh-ins.
The contestants participate in a trivia challenge, and the losing team must work in a diner for the entire week.
One team's fate rests on a single contestant sent to work out at home with their trainer.
The contestants participate in a food drive challenge, and the winning team receives a much-needed visit from a family member.
Ruben returns to the ranch, and his Red Team finally triumphs in the season's most entertaining challenge so far.
The contestants compete in a challenge to create delicious, healthy meals for the Season 14 Biggest Loser kid ambassadors.
The contestants must scavenge through a pumpkin patch in search of immunity, but temptations lurk around every corner.
The contestants are only allowed to use gym equipment they've "purchased" in an auction.
The contestants compete in their first challenge of the season, and the weigh-ins result in the first elimination of Season 15.
Fifteen new contestants arrive on the Biggest Loser Ranch to receive a second chance at life.
The three finalists weigh-in at the live finale, but only one contestant will be crowned The Biggest Loser.
Jillian talks about what makes season 9 stand out from previous ones.
Season 10's Tina talks about the biggest surprise on the ranch.
Season 9's Sam and Stephanie interview this season's at-home winner!
The players have to vote on who to eliminate from the ranch.
Tears at the weigh-in move everyone at the Biggest Loser ranch.
Arthur tells Sam and Stephanie about his Biggest Loser journey - 300 pounds down!
Check in with Michael by watching their weekly personal video blog.
The contestants sit down with their trainers to relive their journeys through Season 15.
Denise makes the ultimate sacrifice for her daughter.
Estella has words of advice for other grandparents.
The players vote on who to eliminate in the fourth week.
Jillian reflects on all the things she has learned on The Biggest Loser.
Check out which player gets eliminated.
Once again, the Red Team must decide who to eliminate.
Shay talks about how her journey is just beginning at this season's finale.
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