This route takes us across the River Usk and through Crickhowell, up Table Mountain to visit Crug Hywel (fort), over the Grwyne Fechan valley, up to Crug Mawr and down into Grwyne Fawr valley. It passes Partrishow Church, parts of which date from before 1065. Then it's a climb up Garn Wen and Bâl Bach before dropping down to Llantony and the Prior.