This week kicks off with a pop challenge in which contestants have to estimate the length of a mile. The winning team gets a night out on the town, Hollywood style, while the other players have to stay behind and clean the ranch. Later, the teams race to light up a "Biggest Loser" board in a challenge that gives a stiff penalty for the losing team - no votes at the elimination. Then one trainer gets shocking news at the weigh-in, and after an emotional elimination, host Alison Sweeney delivers some very exciting news to the contestants.

The nine remaining contestants arrive in New Zealand and embark on the adventure of a lifetime, starting with a visit to Sky Harbor, a popular tourist attraction known for its breathtaking views. Awaiting them are 51 flights of stairs to climb followed by the adrenaline rush of sky-jumping for contestants and trainers. Then it's on to a 5K challenge New Zealand-style, with the winning team getting an unforgettable helicopter ride to gorgeous Waiheke Island. The trainers take contestants to the Auckland Fish Market, where they talk about eating healthy while travelling abroad, and Jillian has a lively lobster encounter. Later, the contestants charter an American Cup racing boat to sail around Auckland Harbor, and one player with a special connection to New Zealand gets a very generous gift.

The New Zealand adventure continues in Queenstown, where the eight remaining contestants learn from host Alison Sweeney that the game is going to singles. Then a special visitor surprises all of the players with a grand and unforgettable entrance! This week's challenge is river surfing, with the winning contestant getting the coveted prize of immunity plus a helicopter ride to spectacular Milford Sound, one of New Zealand's top tourist destinations. Zip-lining, rock climbing and bungee jumping highlight the rest of their memorable Queenstown experience before a weigh-in sends another player home.