There are
1,079 mi
from Flagstaff, AZ to Rapid City, SD
That's the driving distance. It would take 20 hours 8 mins to go from Flagstaff, Arizona to Rapid City, South Dakota.
The flight distance (direct flight from Flagstaff, AZ to Rapid City, SD) is 758.37 mi.
1,079 mi = 1,737.03 kms