There are
1,990 mi
from Markham, IL to Covina, CA
That's the driving distance. It would take 1 day 10 hours to go from Markham, Illinois to Covina, California.
The flight distance (direct flight from Markham, IL to Covina, CA) is 1,717.07 mi.
1,990 mi = 3,202.89 kms