There are
1,573 mi
from Sioux City, IA to Mountlake Terrace, WA
That's the driving distance. It would take 1 day 3 hours to go from Sioux City, Iowa to Mountlake Terrace, Washington.
The flight distance (direct flight from Sioux City, IA to Mountlake Terrace, WA) is 1,307.44 mi.
1,573 mi = 1.61 kms