The Pony Express was a fast mail service crossing the North American continent from St. Joseph, Missouri, to Sacramento, California from April 1860 to October 1861. Messages were carrie by horseback riders relay across the prairies, plains, deserts, and mountains of the Western United States. It briefly reduced the time for mail to travel between the Atlantic and Pacific coasts to around ten days. By traveling an easier shorter route and using mounted riders rather than stagecoaches, the founders of the Pony Express hoped to establish their service as a faster and more reliable conduit for the mail and win away the exclusive government mail contract.