There are
2,022 mi
from Temecula, CA to Prospect Heights, IL
That's the driving distance. It would take 1 day 11 hours to go from Temecula, California to Prospect Heights, Illinois.
The flight distance (direct flight from Temecula, CA to Prospect Heights, IL) is 1,691.85 mi.
2,022 mi = 3.22 kms