The Rainhill trials was an important competition run from the 6 to 14 October 1829, to test George Stephenson's argument that locomotives would have the best motive power for the then nearly-completed Liverpool and Manchester Railway (L&MR).[1] Ten locomotives were entered, of which five were able to compete, running along a 1 mile (1.6 km) length of level track at Rainhill, in Lancashire (now Merseyside).
Stephenson's Rocket was the only locomotive to complete the trials, and was declared the winner. The directors of the L&MR accepted that locomotives should operate services on their new line, and George and Robert Stephenson were given the contract to produce locomotives for the railway.