I will be picking up my daughters van in Boulder and have three weeks with it, before I have to be back in Connecticut. I would like to spent up to 10 days in the Colorado area. I don't want to go much further west, because it would add the same distance to my way back and I have toured the California, Nevada, Utah and Arizona area before. I am a nature lover and not into big cities. I am hoping for suggestions for my time in the area and also for my way back. I guess I have to generally choose between the I 70 and the I 80 but would also like some scenic alternatives. I would like to take daily drives from a couple of hours to not more than half a day. And spent the rest of my days in National or state parks, a little village or with something else that is interesting. I am also interested in campgrounds. I generally prefer the more rustic state park campgrounds over the everything paved luxury ones.
Any suggestions are highly appreciated. I have just started looking into this.