There are
2,111 mi
from Gresham, OR to Mt Prospect, IL
That's the driving distance. It would take 1 day 12 hours to go from Gresham, Oregon to Mt Prospect, Illinois.
The flight distance (direct flight from Gresham, OR to Mt Prospect, IL) is 1,723.38 mi.
2,111 mi = 3.22 kms