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The Biggest Loser: Battle of the Ages is the twelfth season of the NBC reality television series entitled The Biggest Loser. The contestants competed to win a $250,000 prize, which was awarded to John Rhode, the contestant with the highest percentage of weight lost. It premiered on September 20, 2011. Along with existing trainer Bob Harper, two new trainers joined this season. The 15 contestants this season were divided into three groups of five by their ages: those who are 30 and under were initially trained by Quince, those who are between 31–49 were initially trained by Harper, and those who are 50 and over were initially trained by Kournikova. This season marked the first time since season 5 that America did not have to vote on who would become a finalist. For the first time ever in Biggest Loser history, all 3 finalists were men.

S12 E01 • Tuesday, Sep 20, 2011 • Sep 20 • 1h 30m

S12 E02 • Tuesday, Sep 27, 2011 • Sep 27 • 1h 30m

S12 E03 • Tuesday, Oct 4, 2011 • Oct 4 • 1h 30m

S12 E04 • Tuesday, Oct 11, 2011 • Oct 11 • 1h 30m

S12 E05 • Tuesday, Oct 18, 2011 • Oct 18 • 1h 30m

S12 E06 • Tuesday, Oct 25, 2011 • Oct 25 • 1h 30m

S12 E07 • Tuesday, Nov 1, 2011 • Nov 1 • 1h 30m

S12 E08 • Tuesday, Nov 8, 2011 • Nov 8 • 1h 30m

S12 E09 • Tuesday, Nov 15, 2011 • Nov 15 • 1h 30m

S12 E10 • Tuesday, Nov 22, 2011 • Nov 22 • 1h 30m

S12 E11 • Tuesday, Nov 29, 2011 • Nov 29 • 1h 30m

S12 E12 • Tuesday, Dec 6, 2011 • Dec 6 • 1h 30m

S12 E13 • Tuesday, Dec 13, 2011 • Dec 13 • 1h 30m
2011 • 13 Episodes
The Biggest Loser: Battle of the Ages is the twelfth season of the NBC reality television series entitled The Biggest Loser. The contestants competed to win a $250,000 prize, which was awarded to John Rhode, the contestant with the highest percentage of weight lost. It premiered on September 20, 2011. Along with existing trainer Bob Harper, two new trainers joined this season. The 15 contestants this season were divided into three groups of five by their ages: those who are 30 and under were initially trained by Quince, those who are between 31–49 were initially trained by Harper, and those who are 50 and over were initially trained by Kournikova. This season marked the first time since season 5 that America did not have to vote on who would become a finalist. For the first time ever in Biggest Loser history, all 3 finalists were men.

S12 E01 • Tuesday, Sep 20, 2011 • Sep 20 • 1h 30m

S12 E02 • Tuesday, Sep 27, 2011 • Sep 27 • 1h 30m

S12 E03 • Tuesday, Oct 4, 2011 • Oct 4 • 1h 30m

S12 E04 • Tuesday, Oct 11, 2011 • Oct 11 • 1h 30m

S12 E05 • Tuesday, Oct 18, 2011 • Oct 18 • 1h 30m

S12 E06 • Tuesday, Oct 25, 2011 • Oct 25 • 1h 30m

S12 E07 • Tuesday, Nov 1, 2011 • Nov 1 • 1h 30m

S12 E08 • Tuesday, Nov 8, 2011 • Nov 8 • 1h 30m

S12 E09 • Tuesday, Nov 15, 2011 • Nov 15 • 1h 30m

S12 E10 • Tuesday, Nov 22, 2011 • Nov 22 • 1h 30m

S12 E11 • Tuesday, Nov 29, 2011 • Nov 29 • 1h 30m

S12 E12 • Tuesday, Dec 6, 2011 • Dec 6 • 1h 30m

S12 E13 • Tuesday, Dec 13, 2011 • Dec 13 • 1h 30m

The Biggest Loser: Battle of the Ages is the twelfth season of the NBC reality television series entitled The Biggest Loser. The contestants competed to win a $250,000 prize, which was awarded to John Rhode, the contestant with the highest percentage of weight lost. It premiered on September 20, 2011. Along with existing trainer Bob Harper, two new trainers joined this season. The 15 contestants this season were divided into three groups of five by their ages: those who are 30 and under were initially trained by Quince, those who are between 31–49 were initially trained by Harper, and those who are 50 and over were initially trained by Kournikova. This season marked the first time since season 5 that America did not have to vote on who would become a finalist. For the first time ever in Biggest Loser history, all 3 finalists were men.

S12 E01 • Tuesday, Sep 20, 2011 • Sep 20 • 1h 30m

S12 E02 • Tuesday, Sep 27, 2011 • Sep 27 • 1h 30m

S12 E03 • Tuesday, Oct 4, 2011 • Oct 4 • 1h 30m

S12 E04 • Tuesday, Oct 11, 2011 • Oct 11 • 1h 30m

S12 E05 • Tuesday, Oct 18, 2011 • Oct 18 • 1h 30m

S12 E06 • Tuesday, Oct 25, 2011 • Oct 25 • 1h 30m

S12 E07 • Tuesday, Nov 1, 2011 • Nov 1 • 1h 30m

S12 E08 • Tuesday, Nov 8, 2011 • Nov 8 • 1h 30m

S12 E09 • Tuesday, Nov 15, 2011 • Nov 15 • 1h 30m

S12 E10 • Tuesday, Nov 22, 2011 • Nov 22 • 1h 30m

S12 E11 • Tuesday, Nov 29, 2011 • Nov 29 • 1h 30m

S12 E12 • Tuesday, Dec 6, 2011 • Dec 6 • 1h 30m

S12 E13 • Tuesday, Dec 13, 2011 • Dec 13 • 1h 30m
2011 • 13 Episodes
The Biggest Loser: Battle of the Ages is the twelfth season of the NBC reality television series entitled The Biggest Loser. The contestants competed to win a $250,000 prize, which was awarded to John Rhode, the contestant with the highest percentage of weight lost. It premiered on September 20, 2011. Along with existing trainer Bob Harper, two new trainers joined this season. The 15 contestants this season were divided into three groups of five by their ages: those who are 30 and under were initially trained by Quince, those who are between 31–49 were initially trained by Harper, and those who are 50 and over were initially trained by Kournikova. This season marked the first time since season 5 that America did not have to vote on who would become a finalist. For the first time ever in Biggest Loser history, all 3 finalists were men.

S12 E01 • Tuesday, Sep 20, 2011 • Sep 20 • 1h 30m

S12 E02 • Tuesday, Sep 27, 2011 • Sep 27 • 1h 30m

S12 E03 • Tuesday, Oct 4, 2011 • Oct 4 • 1h 30m

S12 E04 • Tuesday, Oct 11, 2011 • Oct 11 • 1h 30m

S12 E05 • Tuesday, Oct 18, 2011 • Oct 18 • 1h 30m

S12 E06 • Tuesday, Oct 25, 2011 • Oct 25 • 1h 30m

S12 E07 • Tuesday, Nov 1, 2011 • Nov 1 • 1h 30m

S12 E08 • Tuesday, Nov 8, 2011 • Nov 8 • 1h 30m

S12 E09 • Tuesday, Nov 15, 2011 • Nov 15 • 1h 30m

S12 E10 • Tuesday, Nov 22, 2011 • Nov 22 • 1h 30m

S12 E11 • Tuesday, Nov 29, 2011 • Nov 29 • 1h 30m

S12 E12 • Tuesday, Dec 6, 2011 • Dec 6 • 1h 30m

S12 E13 • Tuesday, Dec 13, 2011 • Dec 13 • 1h 30m