There are
2,049 mi
from Gresham, OR to Pekin, IL
That's the driving distance. It would take 1 day 11 hours to go from Gresham, Oregon to Pekin, Illinois.
The flight distance (direct flight from Gresham, OR to Pekin, IL) is 1,678.40 mi.
2,049 mi = 3,296.96 kms