There are
2,107 mi
from Gresham, OR to Markham, IL
That's the driving distance. It would take 1 day 12 hours to go from Gresham, Oregon to Markham, Illinois.
The flight distance (direct flight from Gresham, OR to Markham, IL) is 1,746.39 mi.
2,107 mi = 3.22 kms