The M40 Motorway is a major road in England that connects London to Birmingham. It is approximately 89 miles long and serves as a key route for both local and long-distance traffic. The motorway was opened in stages between 1974 and 1991, facilitating travel between the two cities and beyond. The M40 passes through several counties, including Buckinghamshire, Oxfordshire, and Warwickshire. It features multiple junctions that provide access to towns and attractions along the way, making it an important corridor for commerce and tourism in the region.