For the challenge, each contestant has a slide board. They have to slide back and forth, and will get a point for each time they touch a sign with their name. To finish they need 500 points. In accordance with Olympic week, there are three prizes -- they're advantages in this week's main challenge. J.R. demonstrates how to use the slide board, looking quite graceful all the while. Due to medical reasons Darrell, Miggy and O'Neal will sit out. The others are not so lucky, and begin sliding. Daris takes an early fall, and Ashley isn't far behind. Michael has an interesting shuffle technique. More Losers bite the dust on the professional-grade Slip N' Slide. Unfortunately, Melissa is the first to 100, and the first to 250. Sam is close behind, though. We very dramatically have close-ups on the Losers' hilarious sliding shoes, which make them look like they have bags or old lady babushkas tied around their feet. With 25 points to go, Melissa yells out, "Sammy, don't fall, baby!" And then, ha! Karma lives! Melissa falls at 291 points. J.R. just says, "Wow." Sami editorializes, "That can't feel good." My appreciation for her just grew threefold. Sam wins! Melissa finishes second. Sunshine and Lance battle it out for the bronze, and we get to hear a little of the shrill nagging that Lance must endure every minute of his life as Melissa "cheers" him on from the sidelines. And then Sunshine finishes! Good for her. O'Neal is very proud, and there's a little medaling ceremony to anoint the first three finishers. U.S.A.! U.S.A.!

After a commercial break, we're at the modestly named Garden of the Gods State Park in Colorado Springs. I don't know, I think the Gods are probably in Fiji. It's pretty, though. And snowy! As you may have guessed, this is the Olympic week challenge. Sami introduces paralympian Kelly Underkofler, who will be competing in her third Olympic Games in Vancouver as a biathlete and cross-country skier. Kelly tells the Losers that she was born missing her left arm, and she knows that they can relate to living with a challenge day after day. Sami says that Olympic athletes aim for the gold, but during today's challenge, the contestants will be aiming for each other. The challenge is based on the biathlon, which is a combination of cross-country skiing and shooting. Lance, who is apparently a hunter, thinks he has this in the bag. Oh, but wait. There's no cross-country skiing. Rather, the contestants will have to run around a field. At every round, they'll get an opportunity to take a shot at another contestant's target. If they hit it, it will light up. If a contestant's target is hit five times, they're out. Last person standing wins immunity.