Denver to Yellowstone

One thing to be aware of about Dinosaur National Monument, is that much of it is not accessible by road, in fact the road into the park to the fossil bed wall is just a short road in and out of the park, the main park road is just east of Dinosaur, CO about 25 miles east of the fossil bed wall. The main road makes a nice few hours of driving with maybe a dozen pull over spots, overlooks, picnic areas, etc. (we were there last summer in a rental van), there are some campground in the park that allow RV's, but I think most are tent camping only. Also be aware this a a very isolated area, most of the small towns in the area are lucky to have a gas station, so buy supplies before you leave civilization if driving from the east. When we went there last summer it was after a loop through southern WY (Saratoga, etc.) by way of Steamboat Springs, which was so packed we did not even stop, shoulder to shoulder people, we circled multiple blocks without seeing a single parking space of any type.