There are
1,749 mi
from Sioux City, IA to Sunnyvale, CA
That's the driving distance. It would take 1 day 6 hours to go from Sioux City, Iowa to Sunnyvale, California.
The flight distance (direct flight from Sioux City, IA to Sunnyvale, CA) is 1,397.74 mi.
1,749 mi = 1.61 kms