There are
1,796 mi
from Rapid City, SD to Middletown, CT
That's the driving distance. It would take 1 day 8 hours to go from Rapid City, South Dakota to Middletown, Connecticut.
The flight distance (direct flight from Rapid City, SD to Middletown, CT) is 1,550.49 mi.
1,796 mi = 2,890.55 kms