There are
1,598 mi
from Sioux City, IA to Lacey, WA
That's the driving distance. It would take 1 day 3 hours to go from Sioux City, Iowa to Lacey, Washington.
The flight distance (direct flight from Sioux City, IA to Lacey, WA) is 1,326.59 mi.
1,598 mi = 1.61 kms