There are
1,007 mi
from Sioux City, IA to American Fork, UT
That's the driving distance. It would take 17 hours 32 mins to go from Sioux City, Iowa to American Fork, Utah.
The flight distance (direct flight from Sioux City, IA to American Fork, UT) is 809.64 mi.
1,007 mi = 1.61 kms