Where To Stream The Biggest Loser Season 9 Episode 18

The final four contestants go home to prepare for a marathon, but some of the players have trouble staying on track when surrounded by all of the distractions of home. And one contestant gets a special visit from chef Curtis Stone. Later, they return to the ranch to run the 26.2 miles, cheered on by family members as well as each of their favorite past season contestants - season 5 winner Ali Vincent, Season 2 winner Matt Hoover, and Season 7 contestants Mike Morelli and Sione Fa. The winner...