There are
308 mi
from Sioux City, IA to North Platte, NE
That's the driving distance. It would take 6 hours 8 mins to go from Sioux City, Iowa to North Platte, Nebraska.
The flight distance (direct flight from Sioux City, IA to North Platte, NE) is 244.02 mi.
308 mi = 495.85 kms