Season
- Season 18 2020-01-28
- Season 17 2016-01-04
- Season 16 2014-09-11
- Season 15 2013-10-08
- Season 14 2013-01-06
- Season 13 2012-01-03
- Season 12 2011-09-20
- Season 11 2011-01-04
- Season 10 2010-09-21
- Season 9 2010-01-05
- Season 8 2009-09-15
- Season 7 2009-01-06
- Season 6 2008-09-16
- Season 5 2008-01-01
- Season 4 2007-09-11
- Season 3 2006-09-20
- Season 2 2005-09-13
- Season 1 2004-10-19
- Season 0 2007-09-04
Episode
- Episode 1: The Biggest Loser Season 15 Episode 1
- Episode 2: A Game of Chance
- Episode 3: The Auction
- Episode 4: Trick or Treat
- Episode 5: The Cook-Off
- Episode 6: Episode 6
- Episode 7: Thanksgiving
- Episode 8: Take a Trainer Home
- Episode 9: Workplace Obesity
- Episode 10: Episode 10
- Episode 11: Who Gets a Second Chance Back?
- Episode 12: Winter Olympics
- Episode 13: Makeover Week
- Episode 14: Triathlon
- Episode 15: Finale
The Biggest Loser Season 15 The Auction
The Biggest Loser features obese people competing to win a cash prize by losing the highest percentage of weight relative to their initial weight.
