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Biggest Loser final four face the marathon, and temptations at home

By April MacIntyre Dec 5, 2010, 18:05 GMT

The challenge of running faces the final four on NBC's Biggest Loser.

These contestants on NBC’s “The Biggest Loser” run a marathon for their final challenge, and one contestant confronts her parents about their lack of support on the episode airing Tuesday, December 7 (9-11 p.m. ET) on NBC.

The season 10 finale will air Tuesday, December 14 (9-11 p.m. ET).

Alfredo “Frado” Dinten (Staten Island, New York), Patrick House (Vicksburg, Mississippi), Elizabeth Ruiz (Lawrence, Massachusetts) and Ada Wong (Gilroy, California) – are leaving the ranch and returning home.

Each one shows off their new slimmer self to family and friends in emotional reunions celebrating how far they’ve come in their weight loss journeys. But for one contestant, Ada, returning home means it’s time to finally confront her parents over their lack of support. 

Of course being back in their familiar, some of the contestants struggle with the temptations and lazy habits they have been trying to ditch.

Trainers Bob Harper and Jillian Michaels come visit to check on their progress, and chef Curtis Stone makes a special visit to Frado to help prepare healthy food for a big charity event that Frado has organized to raise money for five charities that have a special meaning to him.

Six weeks later, the final four return to the ranch to run 26.2 miles, cheered on by loved ones. The winner breaks a “Biggest Loser” marathon record, and all four get to donate $10,000 to their favorite charities.

Then a final weigh-in determines who the two definite finalists will be – and which two contestants fall below the dreaded yellow line, leaving you viewers to vote which one will be the third finalist to compete for the grand prize of $250,000.