The 1978 Old Dominion 500 was a Winston Cup (now Nextel Cup) event held at Martinsville Speedway on September 24, 1978. Cale Yarborough led 372 of the 500 laps in route to a dominating three-carlength victory on Darrell Waltrip. With five races to go in the championship, Yarborough expaned his points lead on Benny Parsons (3rd) to 405 markers. Stats