 1991 Heinz Southern 500

The 1991 Heinz Southern 500, the 42nd running of the event, was a NASCAR Winston Cup Series race held on September 1, 1991 at Darlington Raceway in Darlington, South Carolina.Contested over 367 laps on the 1.366 mile (2.198 km) speedway, it was the 21st race of the 1991 NASCAR Winston Cup Series season.