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: Season Premiere
- Episode 2: The Biggest Loser Goes to the Beach
- Episode 3: Cruise Week
- Episode 4: Free Pass
- Episode 5: Gym Gone
- Episode 6: Tough Choices
- Episode 7: Duos
- Episode 8: They're Back
- Episode 9: Individuals
- Episode 10: All About the Holidays
- Episode 11: Back to School
- Episode 12: The Final Four
- Episode 13: Season Finale Live!
The Biggest Loser Season 3 They're Back
The Biggest Loser features obese people competing to win a cash prize by losing the highest percentage of weight relative to their initial weight.
