There are
2,047 mi
from Carlsbad, CA to Rantoul, IL
That's the driving distance. It would take 1 day 12 hours to go from Carlsbad, California to Rantoul, Illinois.
The flight distance (direct flight from Carlsbad, CA to Rantoul, IL) is 1,681.66 mi.
2,047 mi = 3.22 kms