There are
1,980 mi
from Orland Park, IL to San Dimas, CA
That's the driving distance. It would take 1 day 10 hours to go from Orland Park, Illinois to San Dimas, California.
The flight distance (direct flight from Orland Park, IL to San Dimas, CA) is 1,704.51 mi.
1,980 mi = 3,186.27 kms