Just Looking, Murrieta, CA
Depends on what part of Temecula you're looking at, and how fast you drive. Time of day is critical too. You can do it in 45 if you drive pretty fast, are on the south end of town and don't take a lot of time getting on the freeway. Up off of Winchester, easily an hour. Morning rush hour in Escondido can really hang things up, but if you use the express lanes (costs money, unless you're carpool) it's wide open once you get on them, but can be some minor delays approaching the 78. I'd allow at least an hour, hour fifteen with traffic. Better safe than sorry!