There are
824 mi
from Rapid City, SD to Pewaukee, WI
That's the driving distance. It would take 14 hours 4 mins to go from Rapid City, South Dakota to Pewaukee, Wisconsin.
The flight distance (direct flight from Rapid City, SD to Pewaukee, WI) is 753.92 mi.
824 mi = 1,326.06 kms