Offa's Dyke Path is a National Trail that stretches through the border country of England and Wales, from the Severn estuary near Chepstow in the south to the Irish Sea at Prestatyn in the north. The trail includes the lower Wye valley, the Black Mountains, the Shropshire Hills, and the Clwydian Range of montains. The walk is approximately 177miles / 285 kilometres and the time taken to complete the Trail can vary from four days to the more typical two weeks, depending on your fitness and your intentions.