The sport has the official site chicagomarathon.com . Chicago Marathon was founded on 1977 . First/Second Sunday in October (before Columbus Day) was when it was held . The venue for Chicago Marathon was Chicago, Illinois, United States
All the events of the sports Chicago Marathon are conducted in Stade Roland Garros (since 1928),Tennis Club de Paris, at Auteuil (some of the years 1895–1908)