There are
2,133 mi
from San Mateo, CA to Lombard, IL
That's the driving distance. It would take 1 day 12 hours to go from San Mateo, California to Lombard, Illinois.
The flight distance (direct flight from San Mateo, CA to Lombard, IL) is 1,835.51 mi.
2,133 mi = 3.22 kms