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 4 Finale Hollie Self takes you through the casting call in Los Angeles!
In their final week on the ranch, Bob reminds Jeff that he can be a source of inspiration for everyone around him, even his celebrity fitness trainer.
Take a closer look at one of the new trainers on The Biggest Loser, Brett Hoebel!
Season 10's Tina talks about the biggest surprise on the ranch.
Allen talks about who he missed the most from the ranch at this season's finale.
Get to know this season's Black team.
Get to know Season 12's Jennifer.
She may not have won $250,000, but she's won everything else - and she's ready to pay it forward!
Arthur tells Sam and Stephanie about his Biggest Loser journey - 300 pounds down!
Check in with Michael by watching their weekly personal video blog.
Check in with Victoria by watching their weekly personal video blog.
Tanya talks about her experience as a contestant on The Biggest Loser.
Mike's experience has been simply amazing!
Estella has words of advice for other grandparents.
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