There are
1,745 mi
from Redondo Beach, CA to Watertown, SD
That's the driving distance. It would take 1 day 6 hours to go from Redondo Beach, California to Watertown, South Dakota.
The flight distance (direct flight from Redondo Beach, CA to Watertown, SD) is 1,362.25 mi.
1,745 mi = 2,807.94 kms