There are
2,163 mi
from San Mateo, CA to Rantoul, IL
That's the driving distance. It would take 1 day 13 hours to go from San Mateo, California to Rantoul, Illinois.
The flight distance (direct flight from San Mateo, CA to Rantoul, IL) is 1,834.79 mi.
2,163 mi = 3.22 kms