The route heads north-northeast as two-lane undivided Mercer Pike, running along the west side of Meadville through commercial areas.

The road soon becomes Pennsylvania Avenue and passes woods to the west and homes to the east in the community of Kerrtown.

PA 102 curves north and becomes Cussewago Road as it runs along the west bank of the French Creek through forested areas.

The route continues through wooded areas of homes as it passes under I-79 just before its terminus at PA 98 in the village of Onspaugh Corners.

[2][3] PA 102 was originally signed in Northampton County that went from the town of Stockertown to Easton.