There are
1,557 mi
from Bellevue, WA to Watertown, SD
That's the driving distance. It would take 1 day 2 hours to go from Bellevue, Washington to Watertown, South Dakota.
The flight distance (direct flight from Bellevue, WA to Watertown, SD) is 1,207.57 mi.
1,557 mi = 1.61 kms