The GWR main line remained incomplete during the construction of the 1-mile-1,452-yard (2.94 km) Box Tunnel, which was ready for trains on 30 June 1841, after which trains ran the 152 miles (245 km) from Paddington through to Bridgwater.[11] In 1851, the GWR purchased the Kennet and Avon Canal, which was a competing carrier between London, Reading, Bath and Bristol.[12]