The Prairie Marksman was a daily passenger train operated by Amtrak between Chicago's Union Station and East Peoria, Illinois. The route was an indirect successor to the Rock Island's Peoria Rocket.

East Peoria is a city in Tazewell County, Illinois, United States. The population was 22,484 at the 2020 census. East Peoria is a suburb of Peoria and is part of the Peoria, Illinois Metropolitan Statistical Area, located across the Illinois River from downtown Peoria. It is home to many Caterpillar Inc. facilities.