There are 1,540.42 miles from Saint Louis to Temecula in southwest direction and 1,829 miles (2,943.49 kilometers) by car, following the I-40 and US-84 W route.
Saint Louis and Temecula are 1 day 2 hours far apart, if you drive non-stop .
This is the fastest route from Saint Louis, MO to Temecula, CA. The halfway point is Cuervo, NM.
Please note the time difference between Saint Louis, MO and Temecula, CA is 2 hours. The current time in Saint Louis is 7:05 am and the current time in Temecula is 5:05 am.
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