There are
1,394 mi
from Chattanooga, TN to Rapid City, SD
That's the driving distance. It would take 1 day to go from Chattanooga, Tennessee to Rapid City, South Dakota.
The flight distance (direct flight from Chattanooga, TN to Rapid City, SD) is 1,136.72 mi.
1,394 mi = 1.61 kms