There are
1,676 mi
from Sioux City, IA to Clearlake, CA
That's the driving distance. It would take 1 day 5 hours to go from Sioux City, Iowa to Clearlake, California.
The flight distance (direct flight from Sioux City, IA to Clearlake, CA) is 1,389.01 mi.
1,676 mi = 2,697.13 kms