Chicago Marathon

Chicago Marathon, annual 26.2-mile (42.2-km) footrace through Chicago that is held each October. Along with the Berlin, Boston, London, New York City, and Tokyo marathons, the Chicago Marathon is one of the world’s six major marathons. The first Chicago Marathon—which was originally known as the Mayor Daley Marathon after the city’s then recently deceased mayor, Richard J. Daley—took place in 1977. The marathon’s route begins downtown in Grant Park, winds through the Loop, and runs...