Martinsville Speedway is an International Speedway Corporation-owned NASCAR stock car racing track located in Henry County, near Ridgeway, Virginia, just to the south of Martinsville. At 0.526 miles (0.847 km) in length, it is the shortest track in the NASCAR Sprint Cup Series. The track was also one of the first paved oval tracks in NASCAR, being built in 1947 by H. Clay Earles. It is also the only racetrack that has been on the NASCAR circuit from its beginning in 1948. The track is often referred to as paper clip-shaped and is banked only 12 in the turns. The combination of long straightaways and flat, narrow turns makes hard braking going into turns and smooth acceleration exiting turns a must. Martinsville's surface is unique, as it is paved with a combination of asphalt (straightaways) and concrete (corners). The track was paved in 1955 and in 1956 it hosted its first 500 lap event.
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