High Quality Content by WIKIPEDIA articles! The 1955 Southern 500 (also known as the 1955 Darlington Southern 500) was a NASCAR Grand National (now Sprint Cup Series) racing event that took place on September 5, 1955 at the Darlington Raceway in the American community of Darlington, South Carolina. This race officially spanned 500 miles (800 km) on a paved oval track. An unofficial 30-minute highlight film of this race would appear on the collector`s set of Stock Cars of 50s & 60s – Stock Car Memories: Darlington-Southern 500; which was released in 2008.