In the final programme, the girls are in Lewis. Starting at high speed, they take a rib through the sound of Scarp before battling gales and rain as they cycle through the hills of the Uig peninsula. They carry on up the west coast, where the long ascents begin to take their toll on already tired legs. Sunshine greets them at the Callanish stones, and they stop for some sustenance. Their strength restored, they carry on through Lewis, crossing the Barvas Moor to the east coast. Flooded bogs and rough terrain stop them in their tracks, and the girls have to retrace their route back to the west coast before reaching their final destination, the lighthouse at the Butt of Ness.