There are
1,825 mi
from Temecula, CA to St Ann, MO
That's the driving distance. It would take 1 day 7 hours to go from Temecula, California to St Ann, Missouri.
The flight distance (direct flight from Temecula, CA to St Ann, MO) is 1,530.91 mi.
1,825 mi = 1.61 kms