There are
373 mi
from Sioux City, IA to Hays, KS
That's the driving distance. It would take 7 hours 30 mins to go from Sioux City, Iowa to Hays, Kansas.
The flight distance (direct flight from Sioux City, IA to Hays, KS) is 293.37 mi.
373 mi = 599.50 kms