Regular here as my handle suggest.
A must, often bypassed because of the scary road, is Toulumne Meadows. But everywhere out there is breathtakingly beautiful.
And so is Sequoia/Kings Canyon as well. Yes, @JAC is right, roads are very tight. Not sure the last years, but they even allow camping anywhere.
California coasts are a bit crowded this time of the year but very lovely. Campsites in state or county parks are difficult to get. If you have the time, go as far North as possible. The farther you go up, the more beautiful, and less crowded, it becomes specially if you are taking Highway 1 or Pacific Coast Highway.
It's a 3-hour drive to Pacific Coast. Highway 120, with if I recall correctly have more than 100 hairpin curves, is more challenging than the Fresno route.
Happy trails and safe travel.
