This week, the contestants take a road trip to one of the most beautiful places in the world - the Grand Canyon! On the way there, they stop by a convenience store for a temptation challenge with host Alison Sweeney that will provide the winning team a much more luxurious trip for their scenic getaway. Once they arrive at the Grand Canyon, they have to figure out how to work out with no gym and no trainers. Later, the family teams compete for an amazing prize in a kayak challenge on the Colorado River before heading back to the ranch, where medical problems threaten to sideline one contestant. Then a surprise shake-up at the weigh in makes for the most difficult and emotional elimination so far.

In part one of this two-part episode, one team gets to go home and surprise their loved ones, while another team cashes in on a prize to spend 24 hours with their trainer for a day they'll never forget! Then the contestants face their toughest challenge yet - a water tower competition that tests their endurance like never before. Later, one group of contestants incurs the wrath of their trainer when it seems they aren't working out as hard as they need to to stay on the ranch.

In part two of this two-part episode, one group of contestants tries to convince their trainer that they are committed to stepping up their workouts. Later, one of the contestants has a heart-to-heart talk with her trainer about relationship issues with their family member. And a surprising weigh-in forces one team to send a family member home when they fall below the yellow line.