This week on the Biggest Loser, the final four ran the Biggest Loser Marathon. They all finished strong.

The episode began with all four standing outside, next to movie screens. Each were again treated to watching themselves weigh in, for the first time. They also got to see some flashbacks from their season. All of them looked trim and lean by contrast: Ashley looked pretty and calm; Koli looked self-assured; Michael looked stunned and slimmer and Daris looked satisfied with his accomplishments.

After seeing their films, hostess Allison Sweeney clapped and congratulated them for getting this far. She confirmed they’d be going home for a month and put their new knowledge to the test of reality. They shared a group hug and headed for home.

Michael was headed for Chicago. He was proud to be weighing in; in front of the same crowd of family and friends he’d faced at the beginning. He walked in and the group burst into applause. When he told them and showed them how much he’d lost, they were all stunned. His mother, Maria, has definitely lost some weight and looks younger and healthier. Michael told everyone he was starting his new life.

Ashley was going home to Knoxville, Tennessee. She said she had worked hard and was glad to go home as a winner. Everyone cheered and congratulated her, especially when she revealed she’d set the record for a female contestant.

Koli’s hometown is Rohert Park, California. He faced his friends and family and told them he had changed and grown. He had developed self-confidence. “I made a promise to do better on the Ranch than Sione and Felipe – and I did. I’ll make you another promise,” he boasted. “I will win the whole contest at the finale.” Cousin Sam was in the crowd and was cheering him on.

Daris went back to his family and friends in Ardmore Oklahoma. Everyone was thrilled and amazed by Daris’ changed appearance. “If I wanted to show anybody how well I’ve done, it was all of you,” he told the gathered crowd. “It means a lot that I can do this.”

After the weigh in, everyone looked up at a screen, near each of their scales. It was no surprise to anyone; Allison was talking to them. She reminded them they’d all been promised “the ride of your lives” at the beginning of the season. Therefore, to begin, they’d had to ride exercise bikes with their partners, for 26.2 miles. To end the season, they would therefore run and/or walk that same distance.

They’d be doing the.....