So, its been about 5 yrs since I did my very first roadtrip from Phoenix to Montana. This time I am going to do it a bit different to cut out the one way car rental fees. I figure fly into and out of Salt Lake City and go from there. The things I want to see are Yellowstone, Grand Tetons (even if its just a day on the way to or from Yellowstone), Arches National Park, Mesa Verde. The route is sort of a pain because its not really a loop, but does anyone have any other suggestions to make the route a bit easier? Any other sites? I have been to Zion and Bryce, so not going to do them again. Haven't seen much in Colorado, but much of those sites are too far of a drive in one day to get there. I am thinking 10 days In May 2011. Any suggestions are appreciated.