1993 Mountain Dew Southern 500  The 1993 Mountain Dew Southern 500, the 44th running of the event, was a NASCAR Winston Cup Series race held on September 5, 1993 at Darlington Raceway in Darlington County, South Carolina. Contested over 351 laps – shortened from 367 laps due to rain/darkness – on the 1.366 mile (2.198 km) speedway, it was the 22nd race of the 1993 NASCAR Winston Cup Series season. Mark Martin of Roush Racing won the race. After an intense battle Mark Martin broke away from Dale Earnhardt and won the Southern 500, his fourth straight Winston Cup win. He and Earnhardt combined to lead 279 laps. Ernie Irvan finished fifth in his debut drive in Robert Yates after an acrimonious split with Morgan McClure Motorsports; Jeff Purvis finished 26th in the McClure Chevrolet. H.B. Bailey would participate in the final race of his professional stock car career.