There are
2,035 mi
from San Clemente, CA to Rantoul, IL
That's the driving distance. It would take 1 day 11 hours to go from San Clemente, California to Rantoul, Illinois.
The flight distance (direct flight from San Clemente, CA to Rantoul, IL) is 1,687.39 mi.
2,035 mi = 3,274.67 kms