There are
2,006 mi
from Downey, CA to Watertown, WI
That's the driving distance. It would take 1 day 11 hours to go from Downey, California to Watertown, Wisconsin.
The flight distance (direct flight from Downey, CA to Watertown, WI) is 1,701.28 mi.
2,006 mi = 3.22 kms