There are
2,149 mi
from San Mateo, CA to Champaign, IL
That's the driving distance. It would take 1 day 13 hours to go from San Mateo, California to Champaign, Illinois.
The flight distance (direct flight from San Mateo, CA to Champaign, IL) is 1,831.44 mi.
2,149 mi = 3.22 kms