
Originally Posted by
Southwest Dave
Depending on which route you decide to take, you could stop at Twentynine Palms and perhaps drive through Joshua Tree NP as part of the onward journey to SD, or a more direct route and you could stop in Barstow. Both are closer to 6 hour drives. If you can find suitable lodgings in Blythe and it's just for an overnight that should be fine too.
A few options back up to SF from theme parks to beaches in the LA area to more sedate seaside towns like Cambria and San Simeon, where you could book a Hearst Castle tour, if that's your thing. Maybe Santa Barbara, Cambria and Monterey would make suitable stops. [?]