The Biggest Loser - Season 12 Episodes

The Biggest Loser - Season 12

The Biggest Loser - Season 12

"The Biggest Loser" kicks off season 12 with two new trainers -- renowned tennis star and certified trainer Anna Kournikova and fitness expert Dolvett Quince -- joining "Biggest Loser" veteran Bob Harper. Under their supervision, 15 contestants come together hoping to transform their bodies, their health and ultimately, their lives.

The Biggest Loser S12E0
Episode 0

Where Are They Now?

Fan favorites return for a thanksgiving special featuring never-before-seen footage, hilarious bloopers and a surprise announcement.

The Biggest Loser S12E1
Episode 1

Season 12, Episode 1

Trainers Anna Kournikova and Dolvett Quince join Bob and new contestants for the Battle of the Ages!

The Biggest Loser S12E2
Episode 2

Season 12, Episode 2

Tempting donuts, limited time in the gym and a visit from Dr. H.

The Biggest Loser S12E3
Episode 3

Season 12, Episode 3

NFL Week, with Clay Matthews, Tony Gonzalez, Drew Brees, Eric Dickerson, Shawne Merriman and Tim Tebow!

The Biggest Loser S12E4
Episode 4

Season 12, Episode 4

Fan faves Hannah Curlee, Adam Hurtado and Marci Crozier check in, and the teams battle the elements to win letters from home.

The Biggest Loser S12E5
Episode 5

Season 12, Episode 5

One lucky player goes home with their trainer and immunity - and the responsibility of losing enough weight to keep their team safe.

The Biggest Loser S12E6
Episode 6

Season 12, Episode 6

Halloween Week brings a crazy candy temptation, a haunted maze and a secret revealed!

The Biggest Loser S12E7
Episode 7

Season 12, Episode 7

A high-stakes calorie challenge realigns the teams and causes a whole lot of drama on the ranch.

The Biggest Loser S12E8
Episode 8

Season 12, Episode 8

Season 11 winner Olivia Ward and chef Devin Alexander host a cooking challenge!

The Biggest Loser S12E9
Episode 9

Season 12, Episode 9

Apolo Ohno guest stars as the game flips to singles and the contestants compete in a pentathlon for immunity!

The Biggest Loser S12E10
Episode 10

Season 12, Episode 10

After a holiday temptation challenge, the trainers prepare a healthy Thanksgiving feast!

The Biggest Loser S12E11
Episode 11

Season 12, Episode 11

It's makeover week with celebrity stylists Jeannie Mae and Ken Paves - and the Final Four are announced!

The Biggest Loser S12E12
Episode 12

Season 12, Episode 12

This week's marathon winner will guarantee themselves a place in the Final Three - and win $25,000.

The Biggest Loser S12E13
Episode 13

Season 12 Finale

The Final Three vie for The Biggest Loser crown! Also featuring a live performance by Train and a sneak peek at Season 13.