The A40 Road is a major road in the United Kingdom that runs from London to Fishguard in Wales. It covers approximately 256 miles and serves as an important route for both local and long-distance traffic. The road passes through several towns and cities, including Oxford and Aberystwyth, providing access to various attractions and services along the way. Originally established as a Roman road, the A40 has evolved over the years to accommodate modern vehicles. It features a mix of dual carriageways and single-lane sections, making it a vital link for commuters and travelers. The road is also part of the European route E30, enhancing its significance in international travel.