Travelling to San Francisco mid June, staying downtown Tuesday till Sat for convention and will see all downtown has to offer. Then we would like to get out of the city for a few days. We won't need a car downtown but would like to rent one for some countryside touring... is it best to head back to the airport to rent a car so we can return it there on Wed? We would like to see Redwoods, Petrified Forest, Old Faithful...how far away are these sights from downtown or airport? Any suggestions on places/towns to stay? Also are there Caverns nearby? We like outdoor holidays...hiking, enjoying nature, bike tours, and enjoy staying at places with some space around us (Often do VRBO).
I would appreciate any suggestions.