There are
2,204 mi
from Markham, IL to Mendota, CA
That's the driving distance. It would take 1 day 14 hours to go from Markham, Illinois to Mendota, California.
The flight distance (direct flight from Markham, IL to Mendota, CA) is 1,771.48 mi.
2,204 mi = 3,546.79 kms