There are
1,676 mi
from Costa Mesa, CA to Sioux Falls, SD
That's the driving distance. It would take 1 day 5 hours to go from Costa Mesa, California to Sioux Falls, South Dakota.
The flight distance (direct flight from Costa Mesa, CA to Sioux Falls, SD) is 1,329 mi.
1,676 mi = 2,698.06 kms