There are
1,433 mi
from Redwood City, CA to Rapid City, SD
That's the driving distance. It would take 1 day to go from Redwood City, California to Rapid City, South Dakota.
The flight distance (direct flight from Redwood City, CA to Rapid City, SD) is 1,090.34 mi.
1,433 mi = 2,305.96 kms