There are
1,631 mi
from San Clemente, CA to Springfield, MO
That's the driving distance. It would take 1 day 4 hours to go from San Clemente, California to Springfield, Missouri.
The flight distance (direct flight from San Clemente, CA to Springfield, MO) is 1,391.72 mi.
1,631 mi = 2,624.33 kms