There are
1,617 mi
from Sioux City, IA to Washougal, WA
That's the driving distance. It would take 1 day 4 hours to go from Sioux City, Iowa to Washougal, Washington.
The flight distance (direct flight from Sioux City, IA to Washougal, WA) is 1,300.58 mi.
1,617 mi = 1.61 kms