Season 15
Episodes
1 The Biggest Loser Season 15 Episode 1 Oct 8, 2013 
2 A Game of Chance Oct 22, 2013 
3 The Auction Oct 29, 2013 
4 Trick or Treat Nov 5, 2013 
5 The Cook-Off Nov 12, 2013 6 Episode 6 Nov 19, 2013 
7 Thanksgiving Nov 26, 2013 
8 Take a Trainer Home Dec 3, 2013 
9 Workplace Obesity Dec 10, 2013 10 Episode 10 Dec 17, 2013 
11 Who Gets a Second Chance Back? Jan 7, 2014 
12 Winter Olympics Jan 14, 2014 13 Makeover Week Jan 21, 2014 
14 Triathlon Jan 28, 2014 15 Finale Feb 4, 2014
2 A Game of Chance Oct 22, 2013 3 The Auction Oct 29, 2013 4 Trick or Treat Nov 5, 2013 5 The Cook-Off Nov 12, 2013 6 Episode 6 Nov 19, 2013 7 Thanksgiving Nov 26, 2013 8 Take a Trainer Home Dec 3, 2013 9 Workplace Obesity Dec 10, 2013 10 Episode 10 Dec 17, 2013 11 Who Gets a Second Chance Back? Jan 7, 2014 12 Winter Olympics Jan 14, 2014 13 Makeover Week Jan 21, 2014 14 Triathlon Jan 28, 2014 15 Finale Feb 4, 2014