There are
1,622 mi
from Sioux City, IA to Gresham, OR
That's the driving distance. It would take 1 day 4 hours to go from Sioux City, Iowa to Gresham, Oregon.
The flight distance (direct flight from Sioux City, IA to Gresham, OR) is 1,304.31 mi.
1,622 mi = 1.61 kms