 | 1x01 Episode 1 (Air Date: Oct. 19, 2004) [add summary] |  | 1x02 Episode 2 (Air Date: Oct. 26, 2004) [add summary] |  | 1x03 Episode 3 (Air Date: Nov. 09, 2004) [add summary] |  | 1x04 Episode 4: Red and Blue Teams Go to New Heights (Air Date: Nov. 16, 2004) [add summary] |  | 1x05 Episode 5: A Team Lightens Up Through Elimination (Air Date: Nov. 23, 2004) [add summary] |  | 1x06 Episode 6: Teams Trek to the Beach for a Challenge (Air Date: Nov. 30, 2004) [add summary] |  | 1x07 Episode 7: Biking Challenge (Air Date: Dec. 07, 2004) [add summary] |  | 1x08 Episode 8: Playing It Close to the Vest (Air Date: Dec. 14, 2004) [add summary] |  | 1x09 Episode 9: A Look Back Special (Air Date: Dec. 21, 2004) [add summary] |  | 1x10 Episode 10: Final Weigh-In at the Ranch (Air Date: Jan. 04, 2005) [add summary] |  | 1x11 Episode 11: Season Finale (Air Date: Jan. 11, 2005) [add summary] |  | 1x12 Episode 12: It Isn't Over Until It's Over (Air Date: Jan. 18, 2005) [add summary] |
 | 2x01 Season Two Begins (Air Date: Sep. 13, 2005) [add summary] |  | 2x02 Straight and Narrow is Tough (Air Date: Sep. 20, 2005) [add summary] |  | 2x03 Hurt Bodies and Feelings (Air Date: Sep. 27, 2005) [add summary] |  | 2x04 What Happens in Vegas Buffets in Vegas (Air Date: Oct. 04, 2005) [add summary] |  | 2x05 Losing Teammates Instead of Weight Drags Down One Team (Air Date: Oct. 11, 2005) [add summary] |  | 2x06 High Anxiety (Air Date: Oct. 18, 2005) [add summary] |  | 2x07 Let's Do the Twist! (Air Date: Oct. 25, 2005) [add summary] |  | 2x08 Fancy Footwork from Pedicures to Pedicabs (Air Date: Nov. 01, 2005) [add summary] |  | 2x09 Jump Start (Air Date: Nov. 08, 2005) [add summary] |  | 2x10 Last One in the Pool is a Winner (Air Date: Nov. 15, 2005) The guys open up and share their dreams before all five remaining contestants take on a nightmarish endurance challenge. By wrapping their arms and legs around a one-foot diameter tube suspended ... |  | 2x11 Scary Scale (Air Date: Nov. 22, 2005) During the last episode taped at the ranch, the final four contestants discover how far they have come in terms of weight loss and exercise by doing the same workout from their first day ... |  | 2x12 Season Two Finale (Air Date: Nov. 29, 2005) After weeks of training and careful eating, it comes down to choosing "The Biggest Loser" in this special two-hour, live season finale. Only three contestants remain in the contest to see ... |
 | 3x01 Season 3 premiere (Air Date: Sep. 20, 2006) 50 contestants, who represent every state in the U.S., learn who will stay at the ranch and who will leave to compete from home. First up: the two teams partake in a wall-scaling contes ... |  | 3x02 Beach Week (Air Date: Sep. 27, 2006) In a special two-hour episode, the contestants get a taste of life away from the ranch with a trip to the beach. The teams quickly learn that it isn't all fun in the sun after Bob and Kim ... |  | 3x03 Cruise Week (Air Date: Oct. 04, 2006) This week the teams must battle the buffets while going on a luxury cruise vacation. Bob and Kim show the teams how to make healthy food choices and work exercise into a vacation. During ... |  | 3x04 Free Pass (Air Date: Oct. 11, 2006) Fresh off their disappointing week, the red team finds themselves falling apart mentally under the pressure. Kim gets frustrated with her team after they refuse to follow her lead. During ... |  | 3x05 Gym Gone (Air Date: Oct. 18, 2006) With the teams even, the players are shocked when they discover that the gym is locked for the week. Bob and Kim use the opportunity to show the teams that they can workout anywhere without ... |  | 3x06 Tough Choices (Air Date: Oct. 25, 2006) After back-to-back losses, one team must step it up in order to keep their team together. During the temptation, the teams must guess the calorie content of various restaurant foods. The ... |  | 3x07 Duos (Air Date: Nov. 01, 2006) Caroline delivers shocking news to the teams when she announces that the red and blue teams are gone. One player will have the power to decide who will compete together as a duo. The duos ... |  | 3x08 They're Back (Air Date: Nov. 08, 2006) Caroline shocks the duos when she tells them that some of the 36 state contestants are back to weigh-in for the chance to rejoin the competition. Two players rejoin the game, but they struggle ... |  | 3x09 Individuals (Air Date: Nov. 15, 2006) The contestants learn that they will be competing as individuals. Also, they receive a makeover and participate in a photo shoot. The challenge involves riding a stationary bike 30 feet ... |  | 3x10 All About the Holidays (Air Date: Nov. 29, 2006) The contestants learn how to cook a tasty but healthy Thanksgiving dinner. For the challenge, the players must wear weights and run around a racetrack for the chance to win a visit with ... |  | 3x11 Back To School (Air Date: Dec. 06, 2006) Bob, Kim and season two winner Matt Hoover tackle the ever growing problem of childhood obesity when they head to their high schools to teach kids about proper exercise and nutrition. While ... |  | 3x12 The Final Four (Air Date: Dec. 06, 2006) It's the final week at the ranch and emotions run high as the contestants prepare to return home. In the final challenge, the players decide to compete as a team in a "Biggest Loser" triathlon. ... |  | 3x13 Season 3 finale (Air Date: Dec. 13, 2006) The winner of the $250,000 grand prize is chosen from the final four. Also, the original 50 contestants return for a reveal of their new bodies. |
 | 4x01 Episode 401 (Air Date: Sep. 11, 2007) Eighteen contestants are dropped in the middle of the desert as Season 4 begins. This year, in addition to the usual red and blue teams (trained by Kim Lyons and Bob Harper, respectively), ... |  | 4x02 Episode 402 (Air Date: Sep. 18, 2007) The immunity challenge has the red and blue teams racing up the stairs of a 10-story building. Then, the secret black team is revealed in the weigh-in room, creating a three-way competi ... |  | 4x03 Episode 403 (Air Date: Sep. 25, 2007) The teams are put to the test for the first time with a tempting food competition. Each contestant will need to decide whether it is worth it to participate when they are put in a room full ... |  | 4x04 Episode 404 (Air Date: Oct. 02, 2007) This week's food temptation puts the trainers to the test instead of the contestants. If Bob, Kim or Jillian give into temptation, they could possibly be giving their team a 15-second advantage ... |  | 4x05 Episode 405 (Air Date: Oct. 09, 2007) This week Alison surprises the three teams with news of an exotic getaway, but they quickly discover their “vacation” will be more work than play. The contestants are faced with temptations ... |  | 4x06 Episode 406 (Air Date: Oct. 16, 2007) The three teams join host Alison Sweeney at the beach for a special challenge that tests the contestants’ perseverance instead of their speed, with the winning team getting something very ... |  | 4x07 Episode 407 (Air Date: Oct. 23, 2007) The stakes are higher than ever when host Alison Sweeney introduces the contestants to a unique version of poker, with the winner getting a prize that will completely change the competition ... |  | 4x08 Episode 408 (Air Date: Oct. 30, 2007) In the aftermath of last week’s surprising game play by one contestant, the other players - and the trainers -- try to move on and bring the focus back to weight loss rather than gameplay. ... |  | 4x09 Episode 409 (Air Date: Nov. 06, 2007) The red, blue and black teams all go “green” for the week, participating in recycling and learning how to implement new environmentally friendly habits in their lives. They also learn ... |  | 4x10 Episode 410 (Air Date: Nov. 13, 2007) For the first time ever this season, the players start competing as individuals rather than teams. A tantalizing temptation has the contestants overcome by the power of donuts and one player ... |  | 4x11 Episode 411 (Air Date: Nov. 20, 2007) The contestants head to the set of Days of Our Lives soap opera, where friends and family wait to surprise them. |  | 4x12 Episode 412 (Air Date: Nov. 27, 2007) The viewers will choose this week's challenge for the seven remaining contestants. |  | 4x13 Episode 413 (Air Date: Dec. 04, 2007) The remaining six contestants are put to work in a pizza place. Later, they participate in a contest involving punching. |  | 4x14 Episode 414 (Air Date: Dec. 11, 2007) The five remaining contestants look back at their hard work up to date before one more is released from the show. |  | 4x15 Episode 415 (Air Date: Dec. 18, 2007) In this must-see, exciting live finale, all of The Biggest Loser contestants from this season return for a special reunion and a chance to weigh in one last time and show America how much ... |
 | 5x01 Episode 501 (Air Date: Jan. 01, 2008) Season Five begins with the introduction of new contestants, who this time will work in pairs instead of individually. Among the teams are brothers, best friends and ex-partners who will ... |  | 5x02 Episode 502 (Air Date: Jan. 08, 2008) The nine remaining pair of contestants are tempted by the smells from a barbecue buffet, and learn that Jillian and Bob will be training them together. Also, a challenge involving a see ... |  | 5x03 Episode 503 (Air Date: Jan. 15, 2008) Rifts form between the contestants as the eight teams vie for immunity. |  | 5x04 Episode 504 (Air Date: Jan. 22, 2008) Three teams begin to second guess themselves when a plot to throw the weigh in is engaged. Next, one of the pairs has set themselves apart from the pack, while the challenge includes a reward ... |  | 5x05 Episode 505 (Air Date: Jan. 29, 2008) The contestants are put through an escalator challenge in which the results change the face of the game. Also, this weeks temptation is a tap full of soda pop, and when a team fights back ... |  | 5x06 Episode 506 (Air Date: Feb. 05, 2008) The contestants compete in a cook off challenge, judged by chef Rocco DiSprito, who prepares a special meal for the winning couple. Also, an injury is suffered by one of th strongest competitors, ... |  | 5x07 Episode 507 (Air Date: Feb. 12, 2008) Each contestant gets a health improvement update from their doctors. Also, a visit from Jillian's mom, a psychotherapist, who delves into the past of each contestant to uncover what issues ... |  | 5x08 Episode 508 (Air Date: Feb. 19, 2008) The teams are without Bob and Jillian for the first time as they each go home and must train on their own. |  | 5x09 Episode 509 (Air Date: Feb. 26, 2008) One lucky team wins a trip to Las Vegas. The elimination round takes a twist when one contestant makes an unexpected sacrifice. |  | 5x10 Episode 510 (Air Date: Mar. 04, 2008) The contestants fly over a ravine on a zip line for this weeks challenge. Meanwhile, the outcome of one player's game may be determined by the immunity challenge. |  | 5x11 Episode 511 (Air Date: Mar. 11, 2008) The eliminated contestants come back to join the six remaining players for a special weigh in. The male and female who have lost the most weight between those previously eliminated are invited ... |  | 5x12 Episode 512 (Air Date: Mar. 18, 2008) [add summary] |  | 5x13 Episode 513 (Air Date: Mar. 25, 2008) The six remaining contestants compete in a pop quiz for a prize. The challenge finds the players giving extra calories to their opponents. |  | 5x14 Episode 514 (Air Date: Apr. 01, 2008) The five remaining contestants are headed to Australia as a surprise. they will be challenged to race around Sydney and then make it to the top of Sydney Harbour Bridge. |  | 5x15 Episode 515 (Air Date: Apr. 08, 2008) The final week on campus finds the four remaining contestants to train themselves, and chef Rocco DiSpirito serves up more cooking secrets. |  | 5x16 Episode 516 (Air Date: Apr. 15, 2008) It's a special reunion as the contestants are weighed in one last time to show just how much weight they have lost since this journey began. A contestant is voted off and joins the 16 others ... |
 | 6x01 Episode 601 (Air Date: Sep. 16, 2008) This season's family theme finds husbands and wives versus their adult children. The contestants receive a surprise at home when trainers Bob Harper Jillian Michaels show up in their home, ... |  | 6x02 Episode 602 (Air Date: Sep. 23, 2008) Rocco DiSpirito gives away some secrets on creating healty yet affordable meals. Meanwhile, the contestants must determine what percentage of weight they will lose during their stay on the ... |  | 6x03 Episode 603 (Air Date: Sep. 30, 2008) The contestants are taken for a road trip to the Grand Canyon, along with a temptation challenge at a convenience store. While at the landmark site, the contestants must figure a way to ... |  | 6x04 Episode 604A (Air Date: Oct. 07, 2008) Part 1 of a 2 part episode finds one contestant being rewarded with a trip home for a visit, as the others are set to spend 24 hours with a personal trainer. Meanwhile, the teams are given ... |  | 6x05 Episode 604B (Air Date: Oct. 08, 2008) The conclusion finds that some of the contestants have picked up the pace of their workout to please their trainer. Later, a contestant confides in a trainer about her family issues. |  | 6x06 Episode 605 (Air Date: Oct. 14, 2008) This episodes temptation test involves the contestants being left in the dark with fresh baked goods, with the winner receiving considerable power which may change the face of the game. ... |  | 6x07 Episode 606 (Air Date: Oct. 21, 2008) The teams are put through the most unusual workouts yet and receives their six week reports by Dr. Huizenga. Then, a challenge on a balance beam rewards the winner with something special ... |
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Episode Screenshots
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