There are
2,025 mi
from Mt Prospect, IL to Temecula, CA
That's the driving distance. It would take 1 day 11 hours to go from Mt Prospect, Illinois to Temecula, California.
The flight distance (direct flight from Mt Prospect, IL to Temecula, CA) is 1,691.49 mi.
2,025 mi = 3,259.07 kms