2003 NASCAR Winston Cup Schedule
| Date | Race | Track |
| Feb. 8 | Bud Shootout | Daytona |
| Feb. 13 | Gatorade 125s | Daytona |
| Feb. 16 | Daytona 500 | Daytona |
| Feb. 23 | Subway 400 | Rockingham |
| Mar. 2 | UAW-DaimlerChrylser 400 | Las Vegas |
| Mar. 9 | Bass Pro Shops 500 | Atlanta |
| Mar. 16 | Carolina Dodge Dealers 400 | Darlington |
| Mar. 23 | Food City 500 | Bristol |
| Mar. 30 | Samsung/Radio Shack 500 | Texas |
| Apr. 6 | Aaron's 499 | Talladega |
| Apr. 13 | Virginia 500 | Martinsville |
| Apr. 27 | Auto Club 500 | California |
| May 3 | Pontiac Excitement 400 | Richmond |
| May 17 | The Winston | Charlotte |
| May 25 | Coca-Cola 600 | Charlotte |
| June 2 | MBNA 400 | Dover |
| June 8 | Pocono 500 | Pocono |
| June 15 | Sirius Satellite 400 | Michigan |
| June 22 | Save Mart 350 | Sears Point |
| July 5 | Pepsi 400 | Daytona |
| July 13 | Tropicana 400 | Chicagoland |
| July 20 | New England 300 | Loudon |
| July 27 | Pennsylvania 500 | Pocono |
| Aug. 3 | Brickyard 400 | Indianapolis |
| Aug. 10 | Sirius at The Glen | Watkins Glen |
| Aug. 17 | Michigan 400 | Michigan |
| Aug. 23 | Sharpie 500 | Bristol |
| Aug. 31 | Mountain Dew Southern 500 | Darlington |
| Sept. 6 | Chevy Monte Carlo 400 | Richmond |
| Sept. 14 | Sylvania 300 | Loudon |
| Sept. 21 | Dover 400 | Dover |
| Sept. 28 | EA Sports 500 | Talladega |
| Oct. 5 | Kansas 400 | Kansas |
| Oct. 11 | UAW-GM Quality 500 | Charlotte |
| Oct. 19 | Old Dominion 500 | Martinsville |
| Oct. 26 | Georgia 500 | Atlanta |
| Nov. 2 | Checker Auto Parts 500 | Phoenix |
| Nov. 9 | Pop Secret 400 | Rockingham |
| Nov. 6 | Ford 400 | Homestead |
