The remaining celebrities are put into pairs for 48 hours of trust exercises, beginning by rappelling down a 100-foot rock face, relying on their partner to break their fall. Once the task is complete, they must run three kilometres back to the van, but Ore Oduba struggles, leaving him and his partner Shanaze Reade stranded on the mountain overnight. In the final task, the recruits carry a 40kg fuel drum in pairs across four kilometres of gruelling terrain.

The recruits are split into two teams and challenged to transport boats across boggy terrain, as well as performing an open water rescue exercise involving a capsized vessel. Alexandra Burke struggles with a race up a cliff, and Wes Nelson undergoes interrogation by the directing staff, while messages from home put the whole team on an emotional knife edge.