The 1998 Dura Lube/Kmart 500 was the 31st stock car race of the 1998 NASCAR Winston Cup Series season and the 11th iteration of the event. The race was held on Sunday, October 25, 1998, in Avondale, Arizona at Phoenix International Raceway, a 1-mile (1.6 km) permanent low-banked tri-oval race track. The race was shortened from its scheduled 312 laps to 257 laps due to inclement weather. At race's end, Penske-Kranefuss Racing driver Rusty Wallace would dominate the race when the race was stopped to take his 48th career NASCAR Winston Cup Series victory and his only victory of the season. To fill out the podium, Roush Racing driver Mark Martin and Richard Childress Racing driver Dale Earnhardt would finish second and third, respectively.