There are
1,056 mi
from Ogden, UT to Watertown, SD
That's the driving distance. It would take 18 hours 32 mins to go from Ogden, Utah to Watertown, South Dakota.
The flight distance (direct flight from Ogden, UT to Watertown, SD) is 790.57 mi.
1,056 mi = 1.61 kms