When Does The Biggest Loser Season 18 Start?

The Biggest Loser season 18 will premiere on Tuesday, January 1 at 9 p.m. ET/PT on NBC. The show will air Tuesdays at 9 p.m. ET/PT for its first three weeks before moving to its regular time slot of Thursdays at 8 p.m. ET/PT on January 24.

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