Where is the 250km (150 miles) long Offa's Dyke?
Offa of Mercia king called Offa ... had a great dyke built between Wales and Mercia from sea to sea". The dyke has not been dated by archaeological methods, but most historians find no reason to doubt Asser's attribution. Early names for the dyke in both Welsh and English also support the attribution to Offa. Despite Asser's comment that the dyke ran "from sea to sea", it is now thought that the original structure only covered about two-thirds of the length of the border: in the north it ends near Llanfynydd, less than five miles (8 km) from the coast, while in the
Offa's Dyke Path in Knighton (). There used to be around 600 stiles along the route, but many of these have now been replaced by kissing gates. Various bodies on either side of the border are collaborating on a sustainable tourism partnership, a principal focus of which is "Walking with Offa", both on the trail but also in what has been dubbed Offa's Country i.e. in a corridor along the border. The path was the focus of an episode of the Channel 4 program "Britain's Ancient Tracks with Tony Robinson". Offa's Dyke Path Offa's Dyke Path (Welsh: "Llwybr Clawdd Offa") is a long-distance