There are
1,645 mi
from Sioux City, IA to Tualatin, OR
That's the driving distance. It would take 1 day 4 hours to go from Sioux City, Iowa to Tualatin, Oregon.
The flight distance (direct flight from Sioux City, IA to Tualatin, OR) is 1,320.57 mi.
1,645 mi = 1.61 kms