In the last episode in the series, Derek is joined by two guides who have both used walking to assist them on their very different but personal journeys. Musician Jules Peters takes Derek on her favourite walk in Wales, a stunning section of the Llyn coastal path which ends at a famous beach bar. Jules explains how walking every day helped her to cope with her breast cancer treatment. On the Welsh border in Presteigne, Derek is with a man who walked the entire 1,100-mile perimeter of Wales to raise awareness and funds for Alzheimer's. Tom Davies takes Derek on a small section of his Welsh wander which includes the Offa's Dyke path.