There are
1,300 mi
from Rapid City, SD to Glendora, CA
That's the driving distance. It would take 23 hours 5 mins to go from Rapid City, South Dakota to Glendora, California.
The flight distance (direct flight from Rapid City, SD to Glendora, CA) is 1,040.05 mi.
1,300 mi = 2,092.80 kms