The 1904 Summer Olympics (officially the Games of the III Olympiad and also known as St. Louis 1904) were an international multi-sport event held in St. Louis, Missouri, United States, from 1 July to 23 November 1904. Many events were conducted at what is now known as Francis Field on the campus of Washington University in St. Louis. This was the first time that the Olympic Games were held outside Europe.

Cool. But why 5 months?