There are
1,192 mi
from Rapid City, SD to Ferndale, MI
That's the driving distance. It would take 21 hours 6 mins to go from Rapid City, South Dakota to Ferndale, Michigan.
The flight distance (direct flight from Rapid City, SD to Ferndale, MI) is 1,014.64 mi.
1,192 mi = 1,918.38 kms