There are
1,771 mi
from Antioch, CA to Watertown, SD
That's the driving distance. It would take 1 day 6 hours to go from Antioch, California to Watertown, South Dakota.
The flight distance (direct flight from Antioch, CA to Watertown, SD) is 1,357.97 mi.
1,771 mi = 1.61 kms