You can typically expect your drive time from Harrah's Resort Southern California to San Diego Carlsbad-Palomar to be 1h 3min. Harrah's Resort Southern California is 21.2 mi away from San Diego Carlsbad-Palomar. How far is Harrah's Resort Southern California from San Diego Carlsbad-Palomar?.Harrah's Resort Southern California is $132 cheaper than the city average at just $141/night. In Valley Center, 3 star hotels have average nightly rates of $273. How does Harrah's Resort Southern California compare to other 3 star hotels in Valley Center?.