There are
1,692 mi
from Napa, CA to Sioux City, IA
That's the driving distance. It would take 1 day 5 hours to go from Napa, California to Sioux City, Iowa.
The flight distance (direct flight from Napa, CA to Sioux City, IA) is 1,387.39 mi.
1,692 mi = 1.61 kms