There are
1,747 mi
from Danbury, CT to Rapid City, SD
That's the driving distance. It would take 1 day 7 hours to go from Danbury, Connecticut to Rapid City, South Dakota.
The flight distance (direct flight from Danbury, CT to Rapid City, SD) is 1,514.07 mi.
1,747 mi = 1.61 kms