There are
1,314 mi
from Rapid City, SD to Placentia, CA
That's the driving distance. It would take 23 hours 20 mins to go from Rapid City, South Dakota to Placentia, California.
The flight distance (direct flight from Rapid City, SD to Placentia, CA) is 1,053.37 mi.
1,314 mi = 2,114.48 kms