There are
1,426 mi
from Sioux City, IA to Richland, WA
That's the driving distance. It would take 1 day to go from Sioux City, Iowa to Richland, Washington.
The flight distance (direct flight from Sioux City, IA to Richland, WA) is 1,155.30 mi.
1,426 mi = 1.61 kms