Miles between Sioux City, IA and Castle Rock, CO

There are
620 mi
from Sioux City, IA to Castle Rock, CO

That's the driving distance. It would take 11 hours 9 mins to go from Sioux City, Iowa to Castle Rock, Colorado.

The flight distance (direct flight from Sioux City, IA to Castle Rock, CO) is 491.11 mi.

620 mi = 997.92 kms