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.
Ruben and Dolvett take a trip to a production studio so that Ruben can demonstrate his passion.
See what Craig has been up to since he left the ranch in Week 5.
The contestants weigh in for Week 6, and Bob is forced to use his trainer save.
David talks about this being a big goal for him and how it feels to have made it to this point.
After a brush with elimination last week, Jillian digs deep to discover Craig's emotional battle and help him overcome his obstacles.
The Blue Team shares a Thanksgiving meal with Bob and their family members.
Jennifer has had trouble with box jumps the entire season. Today, Jillian puts an end to the fear.
Celebrity Hair-stylist Ken Paves talks about how much being apart of the Biggest Loser means to him.
The first weigh-in of Season 15 proves eventful when Jillian decides to use her once-per-season Trainer Save to keep Craig on the ranch.
Resident nutritionist Cheryl Forberg delivers some sage nutrition advice in preparation for Season 15 of The Biggest Loser.
Dolvett's Red Team works out with Beat Cancer Boot Camp, a group of cancer survivors who have dedicated their lives to healthy living.
Anna discusses her personal training style and more.
The new contestants hit the gym for a pain-filled first workout.
And then there were four...
During the equipment auction, the teams battle over a mystery box containing a hidden item that can only be revealed once the item has been won.
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