There are
2,565 mi
from Gresham, OR to Plum, PA
That's the driving distance. It would take 1 day 20 hours to go from Gresham, Oregon to Plum, Pennsylvania.
The flight distance (direct flight from Gresham, OR to Plum, PA) is 2,158.23 mi.
2,565 mi = 3.22 kms