There are
2,115 mi
from Mt Prospect, IL to Gresham, OR
That's the driving distance. It would take 1 day 12 hours to go from Mt Prospect, Illinois to Gresham, Oregon.
The flight distance (direct flight from Mt Prospect, IL to Gresham, OR) is 1,723.38 mi.
2,115 mi = 3,403.05 kms