There are
1,296 mi
from Rancho Cucamonga, CA to Rapid City, SD
That's the driving distance. It would take 22 hours 43 mins to go from Rancho Cucamonga, California to Rapid City, South Dakota.
The flight distance (direct flight from Rancho Cucamonga, CA to Rapid City, SD) is 1,030.70 mi.
1,296 mi = 1.61 kms