The M25 Motorway is a major ring road that encircles London, England. It spans approximately 117 miles (188 kilometers) and connects several key routes, facilitating travel around the city and to surrounding areas. Opened in stages between 1975 and 1986, it is one of the busiest motorways in Europe. The motorway serves as a vital link for commuters and freight transport, reducing congestion in central London. It features multiple junctions that provide access to various towns and cities, including Watford, Gatwick Airport, and Heathrow Airport. The M25 plays a crucial role in the UK's transport network.