There are
2,146 mi
from San Mateo, CA to Markham, IL
That's the driving distance. It would take 1 day 13 hours to go from San Mateo, California to Markham, Illinois.
The flight distance (direct flight from San Mateo, CA to Markham, IL) is 1,852.51 mi.
2,146 mi = 3.22 kms