The 2003 MBNA Armed Forces Family 400 was the 13th stock car race of the 2003 NASCAR Winston Cup Series season and the 35th iteration of the event.

In addition to NASCAR, the track also hosted USAC and the NTT IndyCar Series.

[3] Ryan Newman, driving for Penske Racing South, would set the fastest time in the session, with a lap of 22.738 and an average speed of 158.325 miles per hour (254.799 km/h).

[4] The final practice session, sometimes referred to as Happy Hour, was held on Saturday, May 31, at 9:30 AM EST.

[3] Sterling Marlin, driving for Chip Ganassi Racing, would set the fastest time in the session, with a lap of 23.263 and an average speed of 154.752 miles per hour (249.049 km/h).

[6] Ryan Newman, driving for Penske Racing South, would win the pole, setting a time of 22.682 and an average speed of 158.716 miles per hour (255.429 km/h).