There are
1,392 mi
from Rapid City, SD to Chattanooga, TN
That's the driving distance. It would take 1 day to go from Rapid City, South Dakota to Chattanooga, Tennessee.
The flight distance (direct flight from Rapid City, SD to Chattanooga, TN) is 1,136.72 mi.
1,392 mi = 2,240.72 kms