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.
Season 4 Finale Hollie Self takes you through the casting call in Los Angeles!
Take a closer look at one of the new trainers on The Biggest Loser, Brett Hoebel!
Get to know this season's Black team.
Get to know Rulon and John from season 11's The Biggest Loser.
Check in with Victoria by watching their weekly personal video blog.
Get to know Olivia and Hannah from season 11's The Biggest Loser.
Get to know this season's Aqua team.
Season 9's Sam and Stephanie interview Mark at this season's finale!
Get to know Ken and Austin from season 11's The Biggest Loser.
Get to know Rudy from this season's Biggest Loser. Tuesdays, 8/7c
Check in with Koli by watching their weekly personal video blog.
Get to know Sean from this season's Biggest Loser. Tuesday, 8/7c
Check in with Ashley by watching their weekly personal video blog.
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