I am thinking about roadtripping it with a friend for a majority of the summer. We would start in PA and head south-west and out to California. We have seen the east coast and feel no need to travel directly south before we go west.

I am looking for ideas on different cities to pass through/stay in (we will most likely be camping, so campsites such as KOA would be helpful. We will also be rock climbing in as many places as possible -- not looking for multi-day climbs, but good solid day climbs. We would arrive in southern cali. and travel north through the state then back east through Colorado and maybe hitting up Minnesota?

I am not to sure. Looking for some good ideas from people who know what is out there more than I do. Really flexible schedule.

Thanks for the ideas in advance!