There are
1,521 mi
from Johnson City, TN to Rapid City, SD
That's the driving distance. It would take 1 day 3 hours to go from Johnson City, Tennessee to Rapid City, South Dakota.
The flight distance (direct flight from Johnson City, TN to Rapid City, SD) is 1,220.87 mi.
1,521 mi = 2,448.26 kms