| Episode | Title | Premiere |
|---|---|---|
| 12 | Episode 12: It Isn't Over Until It's Over | January 18, 2005 |
| 11 | Episode 11: Season Finale | January 11, 2005 |
| 10 | Episode 10: Final Weigh-In At The Ranch | January 4, 2005 |
| 09 | Episode 9: A Look Back Special | December 21, 2004 |
| 08 | Episode 8: Playing It Close to the Vest | December 14, 2004 |
| 07 | Episode 7: Biking Challenge | December 7, 2004 |
| 06 | Episode 6: Teams Trek to the Beach for a Challenge | November 30, 2004 |
| 05 | Episode 5: A Team Lightens Up Through Elimination | November 23, 2004 |
| 04 | Episode 4: Red and Blue Teams Go to New Heights | November 16, 2004 |
| 03 | Episode 3 | November 9, 2004 |
| 02 | Episode 2 | October 26, 2004 |
| 01 | Episode 1: Pilot | October 19, 2004 |
| Episode | Title | Premiere |
|---|---|---|
| 12 | Season Two Finale | November 29, 2005 |
| 11 | Scary Scale | November 22, 2005 |
| 10 | Last One in the Pool is a Winner | November 15, 2005 |
| 09 | Jump Start | November 8, 2005 |
| 08 | Fancy Footwork from Pedicures to Pedicabs | November 1, 2005 |
| 07 | Let's Do the Twist! | October 25, 2005 |
| 06 | High Anxiety | October 18, 2005 |
| 05 | Losing Teammates Instead of Weight Drags Down One Team | October 11, 2005 |
| 04 | What Happens in Vegas Buffets in Vegas | October 4, 2005 |
| 03 | Hurt Bodies and Feelings | September 27, 2005 |
| 02 | Straight and Narrow is Tough | September 20, 2005 |
| 01 | Season Two Begins | September 13, 2005 |
| Episode | Title | Premiere |
|---|---|---|
| 13 | Season Finale Live! | December 13, 2006 |
| 12 | The Final Four | December 6, 2006 |
| 11 | Back to School | December 6, 2006 |
| 10 | All About the Holidays | November 29, 2006 |
| 09 | Individuals | November 15, 2006 |
| 08 | They're Back | November 8, 2006 |
| 07 | Duos | November 1, 2006 |
| 06 | Tough Choices | October 25, 2006 |
| 05 | Gym Gone | October 18, 2006 |
| 04 | Free Pass | October 11, 2006 |
| 03 | Cruise Week | October 4, 2006 |
| 02 | The Biggest Loser Goes to the Beach | September 27, 2006 |
| 01 | Season Premiere | September 20, 2006 |
| Episode | Title | Premiere |
|---|---|---|
| 15 | "Biggest Loser" Revealed in Season Finale! | December 18, 2007 |
| 14 | Five Remaining Players Compete for Spot on Finale | December 11, 2007 |
| 13 | A Slice of Temptation | December 4, 2007 |
| 12 | Viewers Choose the Challenge | November 27, 2007 |
| 11 | Memorable Makeovers | November 20, 2007 |
| 10 | A Taste of Home | November 13, 2007 |
| 09 | Biggest Losers Go Green | November 6, 2007 |
| 08 | Most Emotional Elimination So Far of the Season | October 30, 2007 |
| 07 | Weigh-In Shocker | October 23, 2007 |
| 06 | Lively Beach Competition | October 16, 2007 |
| 05 | Surprise Getaway | October 9, 2007 |
| 04 | Bidding Wars | October 2, 2007 |
| 03 | The Pressure of Temptation | September 25, 2007 |
| 02 | The Secret Black Team is Revealed! | September 18, 2007 |
| 01 | Back to Basics | September 11, 2007 |
| Episode | Title | Premiere |
|---|---|---|
| 2 | The Biggest Loser 602 | September 23, 2008 |
| 14 | Finale | December 16, 2008 |
| 13 | The Biggest Loser 612 | December 9, 2008 |
| 12 | The Biggest Loser 611 | December 2, 2008 |
| 11 | The Biggest Loser 610 | November 25, 2008 |
| 10 | The Biggest Loser 609 | November 18, 2008 |
| 09 | The Biggest Loser 608 | November 11, 2008 |
| 08 | The Biggest Loser 607 | October 28, 2008 |
| 07 | The Biggest Loser 606 | October 21, 2008 |
| 06 | The Biggest Loser 605 | October 14, 2008 |
| 05 | The Biggest Loser 604b | October 8, 2008 |
| 04 | The Biggest Loser 604a | October 7, 2008 |
| 03 | The Biggest Loser 603 | September 30, 2008 |
| 02 | Chef Rocco DiSpirito | September 23, 2008 |
| 01 | The Biggest Loser 601 | September 16, 2008 |
| Episode | Title | Premiere |
|---|---|---|
| 21 | Finale Part 2 | May 12, 2009 |
| 20 | Finale | May 12, 2009 |
| 19 | The Biggest Loser 719 | May 12, 2009 |
| 18 | The Biggest Loser 718 | May 5, 2009 |
| 17 | The Biggest Loser 717 | April 28, 2009 |
| 16 | The Biggest Loser 716 | April 21, 2009 |
| 15 | The Biggest Loser 715 | April 14, 2009 |
| 14 | The Biggest Loser 714 | April 7, 2009 |
| 13 | The Biggest Loser 713 | March 31, 2009 |
| 12 | The Biggest Loser 712 | March 24, 2009 |
| 11 | The Biggest Loser 711 | March 17, 2009 |
| 10 | The Biggest Loser 710 | March 10, 2009 |
| 09 | The Biggest Loser 709 | March 3, 2009 |
| 08 | The Biggest Loser 708 | February 24, 2009 |
| 07 | The Biggest Loser 707 | February 17, 2009 |
| 06 | The Biggest Loser 706 | February 10, 2009 |
| 05 | The Biggest Loser 705 | February 3, 2009 |
| 04 | The Biggest Loser 704 | January 27, 2009 |
| 03 | The Biggest Loser 703 | January 20, 2009 |
| 02 | The Biggest Loser 702 | January 13, 2009 |
| 01 | The Biggest Loser 701 | January 6, 2009 |
| Episode | Title | Premiere |
|---|---|---|
| SP | Where are They Now? | November 25, 2009 |
| 13 | The Biggest Loser 813 | December 8, 2009 |
| 12 | The Biggest Loser 812 | December 1, 2009 |
| 11 | The Biggest Loser 811 | November 24, 2009 |
| 10 | The Biggest Loser 810 | November 17, 2009 |
| 09 | The Biggest Loser 809 | November 10, 2009 |
| 08 | The Biggest Loser 808 | November 3, 2009 |
| 07 | The Biggest Loser 807 | October 27, 2009 |
| 06 | The Biggest Loser 806 | October 20, 2009 |
| 05 | The Biggest Loser 805 | October 13, 2009 |
| 04 | The Biggest Loser 804 | October 6, 2009 |
| 03 | The Biggest Loser 803 | September 29, 2009 |
| 02 | The Biggest Loser 802 | September 22, 2009 |
| 01 | The Biggest Loser 801 | September 15, 2009 |
| Episode | Title | Premiere |
|---|---|---|
| 19 | The Biggest Loser 919 | May 25, 2010 |
| 18 | The Biggest Loser 918 | May 18, 2010 |
| 17 | The Biggest Loser 917 | May 11, 2010 |
| 16 | The Biggest Loser 916 | May 4, 2010 |
| 15 | The Biggest Loser 915 | April 27, 2010 |
| 14 | The Biggest Loser 914 | April 20, 2010 |
| 13 | The Biggest Loser 913 | April 13, 2010 |
| 12 | The Biggest Loser 912 | April 6, 2010 |
| 11 | The Biggest Loser 911 | March 30, 2010 |
| 10 | The Biggest Loser 910 | March 23, 2010 |
| 09 | The Biggest Loser 909 | March 16, 2010 |
| 08 | The Biggest Loser 908 | March 9, 2010 |
| 07 | The Biggest Loser 907 | March 2, 2010 |
| 06 | The Biggest Loser 906 | February 9, 2010 |
| 05 | The Biggest Loser 905 | February 2, 2010 |
| 04 | The Biggest Loser 904 | January 26, 2010 |
| 03 | The Biggest Loser 903 | January 19, 2010 |
| 02 | The Biggest Loser 902 | January 12, 2010 |
| 01 | The Biggest Loser 901 | January 5, 2010 |
| Episode | Title | Premiere |
|---|---|---|
| 13 | The Biggest Loser 1013 | December 14, 2010 |
| 12 | The Biggest Loser 1012 | December 7, 2010 |
| 11 | The Biggest Loser 1011 | November 30, 2010 |
| 10 | The Biggest Loser 1010 | November 23, 2010 |
| 09 | The Biggest Loser 1009 | November 16, 2010 |
| 08 | The Biggest Loser 1008 | November 9, 2010 |
| 07 | The Biggest Loser 1007 | November 2, 2010 |
| 06 | The Biggest Loser 1006 | October 26, 2010 |
| 05 | The Biggest Loser 1005 | October 19, 2010 |
| 04 | The Biggest Loser 1004 | October 12, 2010 |
| 03 | The Biggest Loser 1003 | October 5, 2010 |
| 02 | The Biggest Loser 1002 | September 28, 2010 |
| 01 | The Biggest Loser 1001 | September 21, 2010 |
| Episode | Title | Premiere |
|---|---|---|
| 21 | The Biggest Loser 1121 | May 24, 2011 |
| 20 | The Biggest Loser 1120 | May 17, 2011 |
| 19 | The Biggest Loser 1119 | May 10, 2011 |
| 18 | The Biggest Loser 1118 | May 3, 2011 |
| 17 | The Biggest Loser 1117 | April 26, 2011 |
| 16 | The Biggest Loser 1116 | April 19, 2011 |
| 15 | The Biggest Loser 1115 | April 12, 2011 |
| 14 | The Biggest Loser 1114 | April 5, 2011 |
| 13 | The Biggest Loser 1113 | March 29, 2011 |
| 12 | The Biggest Loser 1112 | March 22, 2011 |
| 11 | The Biggest Loser 1111 | March 15, 2011 |
| 10 | The Biggest Loser 1110 | March 8, 2011 |
| 09 | The Biggest Loser 1109 | March 1, 2011 |
| 08 | The Biggest Loser 1108 | February 22, 2011 |
| 07 | The Biggest Loser 1107 | February 15, 2011 |
| 06 | The Biggest Loser 1106 | February 8, 2011 |
| 05 | The Biggest Loser 1105 | February 1, 2011 |
| 04 | The Biggest Loser 1104 | January 25, 2011 |
| 03 | The Biggest Loser 1103 | January 18, 2011 |
| 02 | The Biggest Loser 1102 | January 11, 2011 |
| 01 | The Biggest Loser 1101 | January 4, 2011 |
| Episode | Title | Premiere |
|---|---|---|
| SP | Where Are They Now? Special | November 23, 2011 |
| 13 | Episode 13 | December 13, 2011 |
| 12 | Episode 12 | December 6, 2011 |
| 11 | Episode 11 | November 29, 2011 |
| 10 | Episode 10 | November 22, 2011 |
| 09 | Episode 9 | November 15, 2011 |
| 08 | Episode 8 | November 8, 2011 |
| 07 | Episode 7 | November 1, 2011 |
| 06 | Episode 6 | October 25, 2011 |
| 05 | Episode 5 | October 18, 2011 |
| 04 | Episode 4 | October 11, 2011 |
| 03 | Episode 3 | October 4, 2011 |
| 02 | Episode 2 | September 27, 2011 |
| 01 | Episode 1 | September 20, 2011 |
| Episode | Title | Premiere |
|---|---|---|
| 18 | Episode 18 | May 1, 2012 |
| 17 | Episode 17 | April 24, 2012 |
| 16 | Episode 16 | April 17, 2012 |
| 15 | Episode 15 | April 10, 2012 |
| 14 | Episode 14 | April 3, 2012 |
| 13 | Episode 13 | March 27, 2012 |
| 12 | Episode 12 | March 20, 2012 |
| 11 | Episode 11 | March 13, 2012 |
| 10 | Episode 10 | March 6, 2012 |
| 09 | Episode 9 | February 28, 2012 |
| 08 | Episode 8 | February 21, 2012 |
| 07 | Episode 7 | February 14, 2012 |
| 06 | Episode 6 | February 7, 2012 |
| 05 | Episode 5 | January 31, 2012 |
| 04 | Episode 4 | January 24, 2012 |
| 03 | Episode 3 | January 17, 2012 |
| 02 | Episode 2 | January 10, 2012 |
| 01 | Episode 1 | January 3, 2012 |
| Episode | Title | Premiere |
|---|---|---|
| 12 | Live Finale | March 18, 2013 |
| 11 | Down to the Wire | March 11, 2013 |
| 10 | Makeover Week | March 4, 2013 |
| 09 | Face Your Fears | February 25, 2013 |
| 08 | Work Together | February 18, 2013 |
| 07 | Tough Love | February 11, 2013 |
| 06 | Lead by Example | February 4, 2013 |
| 05 | Waist & Money | January 28, 2013 |
| 04 | Pay It Forward | January 21, 2013 |
| 03 | Cut the Junk | January 14, 2013 |
| 02 | Get Moving | January 7, 2013 |
| 01 | We're Back...And So Is Jillian | January 6, 2013 |
| Episode | Title | Premiere |
|---|---|---|
| 15 | The Season 15 Finale | February 4, 2014 |
| 14 | One Last Chance | January 28, 2014 |
| 13 | Makeover Week | January 21, 2014 |
| 12 | Winter Olympics | January 14, 2014 |
| 11 | Who Gets a Second Chance Back? | January 7, 2014 |
| 10 | Down to Singles | December 17, 2013 |
| 09 | Work Week | December 10, 2013 |
| 08 | Take a Trainer Home | December 3, 2013 |
| 07 | Thanksgiving | November 26, 2013 |
| 06 | Remember Who You Are | November 19, 2013 |
| 05 | The Cook-Off | November 12, 2013 |
| 04 | Trick or Treat | November 5, 2013 |
| 03 | The Auction | October 22, 2013 |
| 02 | A Game of Chance | October 15, 2013 |
| 01 | Second Chances | October 8, 2013 |
| Episode | Title | Premiere |
|---|---|---|
| 18 | Live Finale | January 29, 2015 |
| 17 | End Zone | January 22, 2015 |
| 16 | The Comeback | January 15, 2015 |
| 15 | Makeover Week | January 8, 2015 |
| 14 | Kauai Part 2 | January 1, 2015 |
| 13 | Kauai Part 1 | December 18, 2014 |
| 12 | The Playoffs | December 11, 2014 |
| 11 | No "I" in Team | November 20, 2014 |
| 10 | Free Agents | November 13, 2014 |
| 09 | Yes, Coach! | November 6, 2014 |
| 08 | Penalty Box | October 30, 2014 |
| 07 | The Drop | October 23, 2014 |
| 06 | The Tailgate | October 16, 2014 |
| 05 | Sidelined | October 9, 2014 |
| 04 | The Lottery | October 2, 2014 |
| 03 | Double Header | September 25, 2014 |
| 02 | The Knockout | September 18, 2014 |
| 01 | Opening Day | September 11, 2014 |
| Episode | Title | Premiere |
|---|---|---|
| 08 | Live Finale | February 22, 2016 |
| 07 | I Got The Power/The Final Cut | February 15, 2016 |
| 06 | Makeover Week | February 8, 2016 |
| 05 | Homeward Bound/Real World Problems | February 1, 2016 |
| 04 | Ready? Set. Auction!; Ship Shape | January 25, 2016 |
| 03 | Hooked On 'Tronics / The Big Switch | January 18, 2016 |
| 02 | Taste Test / Keep On Truckin' | January 11, 2016 |
| 01 | Money Hungry | January 4, 2016 |
| Episode | Title | Premiere |
|---|---|---|
| 10 | Finale | March 31, 2020 |
| 09 | Final Four | March 24, 2020 |
| 08 | Boosting Morale | March 17, 2020 |
| 07 | Going Solo | March 10, 2020 |
| 06 | Overcoming Obstacles | February 27, 2020 |
| 05 | Diving In | February 25, 2020 |
| 04 | Messages from Home | February 18, 2020 |
| 03 | Supporting the Team | February 11, 2020 |
| 02 | A Big Loss | February 4, 2020 |
| 01 | Time for Change | January 28, 2020 |