Nancy,
Joseph D Grant County Park is about 12 miles from the San Jose Alum Rock Ave exit off the I-680.
http://www.sccgov.org/sites/parks/parkf ... Grant.aspxWhile reservations are required, that's kind of an advantage because I could check for availability. For July 1, 2, & 3, there are sites available:
http://gooutsideandplay.org/Index.asp?a ... ype_idno=0There are a couple caveats, though. If I'm not mistaken, tent sites are $24 a night, probably okay for our style of camping but maybe more than some want to pay. The road narrows on last 4 miles and is not recommended for big RV's....probably a piece of cake for your teardrop, though. And, the big one for you is that you have to
be there by sunset (The gate locks then.); so, with driving about 360 miles in one day, that may not work for you. Still, others may be interested.
The advantages? Close to downtown San Jose; a safe place to camp; and....Free Hot Showers!
I couldn't find any CA State day parks in the nearby area. Once you start getting close to San Francisco and the ocean, parks of all types become harder to find. Campsite vacancies are even more difficult to find. Benicia State Park, just off I-680, has 3 en-route spots but they are first-come, first-served. So, arriving late may mean last-come, no-served.