Royal Gorge, campgrounds and Black Canyon
A friend of mine was there this past weekend and he really enjoyed it -- said he rode a train there.
There are some campgrounds along US50 and the Blue Mesa reservoir near Gunnison which is spectacular wide open country, also a private campground at Cimmarron (great setting!) that was really nice. He had little cabins also. Ask him about the drive south to Ridgeway (the back road, it is on the maps, Cimmarron to Ridgeway). The movie True Grit was filmed in that area and the scenery is breathtaking (like much of Colorado). Also, NE of Gunnison, there's a quiet campground (no trees) overlooking the Taylor Park reservoir near the junction of CR742 and CR55. There are other camps in that area as well, and lots of back road drives including some suitable only for 4WD.
Be sure to save time for a visit to Black Canyon National Park. Unlike the Grand Canyon, the Kolb brothers were unable to boat it -- and Gen. William Jackson Palmer couldn't build a railroad line through it either. It's awesome! Bob