The Biggest Loser - Season 1

The Biggest Loser (season 1) is the first season of the NBC reality television series entitled The Biggest Loser, which premiered on October 19, 2004. The show features overweight contestants competing to lose the largest percentage of their body weight and receive the title of 'Biggest Loser,' along with a $250,000 grand prize. The first season featured twelve contestants divided into two teams of six players. The teams were each led by a personal trainer, Bob Harper with the Blue Team and Jillian Michaels with the Red Team. The first season was hosted by Caroline Rhea.

• S1 E1 - Episode 1: Pilot

• S1 E2 -

• S1 E3 -

• S1 E4 - Episode 4: Red and Blue Teams Go to New Heights

• S1 E5 - Episode 5: A Team Lightens Up Through Elimination

• S1 E6 - Episode 6: Teams Trek to the Beach for a Challenge

• S1 E7 - Episode 7: Biking Challenge

• S1 E8 - Episode 8: Playing It Close to the Vest

• S1 E9 - Episode 9: A Look Back Special

• S1 E10 - Episode 10: Final Weigh-In At The Ranch

• S1 E11 - Episode 11: Season Finale

• S1 E12 - Episode 12: It Isn't Over Until It's Over