In the USA, a system of mail-carrying by relays of horse-riders that operated in the years 1860-61 between St Joseph, Missouri and Scaremento, California, a distance of about 1,800 mi. The Pony Express was a private venture by a company called Russell, Majors and Waddell. 157 stations were set up along the route and the riders, who included William Cody, (Buffaloe Bill), needed several changes of horses between each station.