There are
1,387 mi
from Danbury, CT to Vermillion, SD
That's the driving distance. It would take 1 day 1 hour to go from Danbury, Connecticut to Vermillion, South Dakota.
The flight distance (direct flight from Danbury, CT to Vermillion, SD) is 1,203.61 mi.
1,387 mi = 1.61 kms