Season 1 Network 10 , 2006 Watch now Season 2 Network 10 , 2007 Season 3 Network 10 , 2008 Watch now Season 4 Network 10 , 2009 Season 5 Network 10 , 2010 Season 6 Network 10 , 2011 Watch now Season 7 Network 10 , 2011 - 2012 Season 8 Network 10 , 2013 Season 9 Network 10 , 2014 Season 10 Network 10 , 2015 Season 11 The Biggest Loser: Transformed Network 10 , 2017