Ontario Motor Speedway was located east of Los Angeles; the oval was a 2.5 mile duplicate of Indianapolis Motor Speedway, and an infield road course and a quarter mile dragstrip were added. Despite hosting Indy Cars and NASCAR it was never a financial success, and in response to rising property values it was sold to developers.
Last Updated: 2007-09-01
First proposed in 1956. Ground broke in 1966. The paved oval opened on September 6th, 1970, operating until December 16th, 1980. The road course opened on March 27th, 1971, operating until 1980. The dragstrip operated from 1970 to 1980.
|Allan E. Brown, The History of America's Speedways: Past & Present. Comstock Park, Michigan: Brown, 2003 , ISBN 0931105617 , pp. 153. Order from National Speedway Directory|
Another map showing the infield road course and the complete oval may be found Here.
The terra server link below yields the 1978 topo map of the area, showing the race track clearly.
For information on how these aerial images work, Click Here.
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