1896 - Athens, Greece
1900 - Paris, France
1904 - St.Louis, USA
1908 - London, UK
1912 - Stockholm, Sweden
1916 - not held
1920 - Antwerp, Netherlands
1924 - Paris, France
1928 - Amsterdam, Netherlands
1932 - Los Angeles, USA
1936 - Berlin, Germany
1940 - not held
1944 - not held
1948 - London, UK
1952 - Helsinki, Finland
1956 - Melbourne, Australia
1960 - Rome, Italy
1964 - Tokyo, Japan
1968 - Mexico City, Mexico
1972 - Munich, Germany
1976 - Montreal, Canada
1980 - Moscow, USSR
1984 - Los Angeles, USA
1988 - Seoul, S.Korea
1992 - Barcelona, Spain
1996 - Atlanta, USA
2000 - Sydney, Australia
2004 - Athens, Greece
2008 - Beijing, China
2012 - ?
The Games NOT held because of the World Wars I and II were scheduled for

1916 - Berlin
1940 - Tokyo at first, then Helsinki
1944 - London

List of some current (Track and Field) Olympic Records
A very brief History of the Games
Some Other Sources of material