There are
1,660 mi
from Sioux Falls, SD to Fullerton, CA
That's the driving distance. It would take 1 day 4 hours to go from Sioux Falls, South Dakota to Fullerton, California.
The flight distance (direct flight from Sioux Falls, SD to Fullerton, CA) is 1,319.75 mi.
1,660 mi = 1.61 kms