There are
1,479 mi
from Sioux Falls, SD to New London, CT
That's the driving distance. It would take 1 day 3 hours to go from Sioux Falls, South Dakota to New London, Connecticut.
The flight distance (direct flight from Sioux Falls, SD to New London, CT) is 1,258.60 mi.
1,479 mi = 1.61 kms