There are
2,148 mi
from San Mateo, CA to Midlothian, IL
That's the driving distance. It would take 1 day 13 hours to go from San Mateo, California to Midlothian, Illinois.
The flight distance (direct flight from San Mateo, CA to Midlothian, IL) is 1,851.22 mi.
2,148 mi = 3.22 kms