There are
1,408 mi
from Danbury, CT to Sioux Falls, SD
That's the driving distance. It would take 1 day 2 hours to go from Danbury, Connecticut to Sioux Falls, South Dakota.
The flight distance (direct flight from Danbury, CT to Sioux Falls, SD) is 1,190.08 mi.
1,408 mi = 1.61 kms