The 1998 Pennsylvania 500 was the 18th stock car race of the 1998 NASCAR Winston Cup Series season and the 26th iteration of the event.

The race was held on Sunday, July 26, 1998, in Long Pond, Pennsylvania, at Pocono Raceway, a 2.5 miles (4.0 km) triangular permanent course.

[3] Ward Burton, driving for Bill Davis Racing, would set the fastest time in the session, with a lap of 53.956 and an average speed of 166.809 mph (268.453 km/h).

[3] Mark Martin, driving for Roush Racing, would set the fastest time in the session, with a lap of 53.637 and an average speed of 167.795 mph (270.040 km/h).

[5] The final practice session, sometimes referred to as Happy Hour, was held on Saturday, July 25, after the preliminary 1998 ARCA Pepsi 400k.

[3] Jeff Gordon, driving for Hendrick Motorsports, would set the fastest time in the session, with a lap of 54.285 and an average speed of 165.792 mph (266.816 km/h).

[7] Ward Burton, driving for Bill Davis Racing, would win the pole, setting a time of 53.316 and an average speed of 168.805 miles per hour (271.665 km/h).