There are
1,740 mi
from Ukiah, CA to Sioux City, IA
That's the driving distance. It would take 1 day 6 hours to go from Ukiah, California to Sioux City, Iowa.
The flight distance (direct flight from Ukiah, CA to Sioux City, IA) is 1,414.49 mi.
1,740 mi = 2,800.98 kms