There are
1,782 mi
from Temecula, CA to Quincy, IL
That's the driving distance. It would take 1 day 8 hours to go from Temecula, California to Quincy, Illinois.
The flight distance (direct flight from Temecula, CA to Quincy, IL) is 1,487.36 mi.
1,782 mi = 2,867.63 kms