There are
1,998 mi
from Palatine, IL to Walnut, CA
That's the driving distance. It would take 1 day 10 hours to go from Palatine, Illinois to Walnut, California.
The flight distance (direct flight from Palatine, IL to Walnut, CA) is 1,705.97 mi.
1,998 mi = 3,215.33 kms