Season Twelve of The Biggest Loser premiered on September 20, 2011.
Episodes
| # |
#
|
Title
|
|
|
Airdate
|
|
|
|
| 157 |
1
|
Episode 1201
|
|
|
September 20, 2011
|
|
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|
| 158 |
2
|
Episode 1202
|
|
|
September 27, 2011
|
|
|
|
| 159 |
3
|
Episode 1203
|
|
|
October 4, 2011
|
|
|
|
| 160 |
4
|
Episode 1204
|
|
|
October 11, 2011
|
|
|
|
| 161 |
5
|
Episode 1205
|
|
|
October 18, 2011
|
|
|
|
| 162 |
6
|
Episode 1206
|
|
|
October 25, 2011
|
|
|
|
| 163 |
7
|
Episode 1207
|
|
|
November 1, 2011
|
|
|
|
| 164 |
8
|
Episode 1208
|
|
|
November 8, 2011
|
|
|
|
| 165 |
9
|
Episode 1209
|
|
|
November 15, 2011
|
|
|
|
| 166 |
10
|
Episode 1210
|
|
|
November 22, 2011
|
|
|
|
| S6 |
SP
|
Where Are They Now? Special
|
|
|
November 23, 2011
|
|
|
|
| 167 |
11
|
Episode 1211
|
|
|
November 29, 2011
|
|
|
|
| 168 |
12
|
Episode 1212
|
|
|
December 6, 2011
|
|
|
|
| 169 |
13
|
Episode 1213
|
|
|
December 13, 2011
|
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