Route: Seiriol Wyn a Cybi Felyn (United Kingdom)

The route dates back to the 6th century. It follos the path of Saints Seiriol Wyn and Cybi Felyn who would walk from the opposite ends of Ynys Môn and meet at Ffynnon Cybi in Clorach. The route starts at Caergybi and ends at Trwyn Du, Penmon using mainly back roads with public footpaths where possible and a short section of the coastal path.