Google these: Seaport village, USS Midway, Star of India, Balboa Park, Morley Field for disc golf, Del Mar Fairgrounds, Drive from La Jolla on Hwy 1 through North SD County to Carlsbad many places to wander or stop and look at the beaches (no more sand though). 10 yrs ago I'd say run down to TJ and see the Beaches south of the border and some cheap lobster, but not now.

Trey, a nice offroad trip is from Ranchita, CA on Hwy S22 down Grapevine canyon road to Hwy 78 through the Anza Borrego park. Nothing crazy, but a few scratchy spots (you know me...) A nice relaxing drive down the hill, lots of photo ops.