The remaining seven intruders were taken to Stockton, a small coastal sand dune area near Sydney. They then had to race 3km through the sand dunes by foot over some dunes more than 30m in height. There were to be three winners. It didn't matter who came first or last in the race because at the finish line they had to choose a food product which they thought had the least amount of calories. Harry, Cat and Jo remained in the competition.