There are
1,191 mi
from Sioux City, IA to Kalispell, MT
That's the driving distance. It would take 20 hours 27 mins to go from Sioux City, Iowa to Kalispell, Montana.
The flight distance (direct flight from Sioux City, IA to Kalispell, MT) is 951.92 mi.
1,191 mi = 1.61 kms