Jillian notices that Cara and Ken are having it out, so invites Kaylee and Austin to train with her for the moment. Are we going to get to see Jillian and Cara have it out? It's really what we've been waiting for all season. Meanwhile, Ken tells Cara that he needs someone to get in his face and tell him what he needs to do. Cara says that if he wants someone to get in his face, that's no problem. She has no problem with torture. Ken tells us that he questions whether Cara has the expertise to take their team to the finish line, even though she has the heart and desire. And really, that's totally legit. I'd totally defect if I were him.

Meanwhile, Bob and Jillian have their team members beat on giant tires and do squats with medicine balls and run with parachutes behind them. They apparently do not believe in relaxing vacations. Cara has already lost Kaylee and Austin, so focuses on Ken, who ironically is the person who would rather be training with Bob and Jillian. Cara tells us that this is her chance to prove that she's just as good as Bob and Jillian. If you say so, short stack.

With that, it's challenge time! Sami greets the contestants on a hillside overlooking Bethells Beach. She tells them that they're going to compete in a 5K, New Zealand style. This means it will be extra hard. They'll have to run down a path, where they'll hit a creek bed, climb the sand dunes, and run down the beach to a finish line. Terrain! It's a lot harder than a treadmill. The contestants will be running as teams. The first team to get all players to the finish line will be taken by helicopter to Waiheke Island for a lovely lunch.

The contestants take off, and the Green Team is first to hit a fast pace. Jay feels an old hamstring injury acting up, which does not bode well for the Black Team. He jogs as well as he can, but the Green and Blue teams overtake him pretty easily. Green Team is in the lead, but Blue is catching up. The contestants run through a creek bed, which Austin tells us is quite difficult. Everyone flashes back to their first week on campus, when they could barely take six steps without getting very red-faced and being in danger of passing out. The top two teams get through the creek bed and hit the sand dune, which is practically vertical. The Green Team starts to struggle, allowing the Blue Team members to pull even with them. Ken says he does not have the strength to get up the hill, but manages to do it anyway. The Green Team trails the Blue Team on the final leg of the race. Rulon tells us that Jay was struggling, but it's not always about finishing first. Jay conveniently agrees. He says that the only person he's competing with is his old self. Also, six other people.