There are
883 mi
from Sioux City, IA to Evanston, WY
That's the driving distance. It would take 15 hours 39 mins to go from Sioux City, Iowa to Evanston, Wyoming.
The flight distance (direct flight from Sioux City, IA to Evanston, WY) is 752.97 mi.
883 mi = 1,420.42 kms