There are
1,762 mi
from Carlsbad, CA to Watertown, SD
That's the driving distance. It would take 1 day 7 hours to go from Carlsbad, California to Watertown, South Dakota.
The flight distance (direct flight from Carlsbad, CA to Watertown, SD) is 1,349.30 mi.
1,762 mi = 1.61 kms