The 1975 Atlanta 500 was a Winston Cup Series (now Nextel Cup Series) event held at Atlanta Motor Speedway on March 23, 1975. Richard Petty dominated the race, leading 170 of 328 laps, but still had to hold off Buddy Baker by .6 seconds. Petty now held a 188-point championship lead on Cecil Gordon (8th) just a few races into the season. Stats