There are
1,444 mi
from Danbury, CT to Watertown, SD
That's the driving distance. It would take 1 day 3 hours to go from Danbury, Connecticut to Watertown, South Dakota.
The flight distance (direct flight from Danbury, CT to Watertown, SD) is 1,212.52 mi.
1,444 mi = 2,324.39 kms