There are
1,173 mi
from Rapid City, SD to Piqua, OH
That's the driving distance. It would take 21 hours 16 mins to go from Rapid City, South Dakota to Piqua, Ohio.
The flight distance (direct flight from Rapid City, SD to Piqua, OH) is 1,007.97 mi.
1,173 mi = 1,888.50 kms