There are
1,947 mi
from Mt Prospect, IL to Hesperia, CA
That's the driving distance. It would take 1 day 10 hours to go from Mt Prospect, Illinois to Hesperia, California.
The flight distance (direct flight from Mt Prospect, IL to Hesperia, CA) is 1,668.85 mi.
1,947 mi = 3,133.35 kms