RV parks for Yellowstone

I am continually amazed at the comments saying it's just so far to travel from Colter Bay to Yellowstone and back to tour Yellowstone. It's about 45 miles from Colter Bay to the South Entrance to Yellowstone and then you get to drive past the Lewis River Canyon, whatever it's called, past Lewis Lake and up to Grant Village, which takes about another 25 miles. Total, about 1 1/2 hours to the junction at Grant. Then, take your choice to go to Yellowstone Lake and up to Canyon, over to Norris and back through Old Faithful and back that evening or, go to Canyon, up to Mammoth, back down to Norris and Old Faithful and back to Colter. Either tour can be done easily in a day, if you start out pretty early, we leave around 7:00 or so in the morning and get back by around 7:00 or so in the evening for a late, relaxing supper in the campground surrounded by some of the most beautiful scenery in the world. Unless a person wants to take long hikes and spend a lot of time at the features in Yellowstone, a person can get a wonderful experience hopping up to Yellowstone and back on a day trip.