We did that trip a few years ago.
First day we drove to Albert Lea, MN (no stops, pull through site, didn't unhook).
Second day drove Custer State Park (stopped at the Corn Palace along the way). Stayed there 6 nights. Seen Mt. Rushmore, Black Hills, Wind Caves, Badlands, Wall Drug, Crazy Horse, etc.
Then we went to Gardner, Wy (north entrance to Yellowstone). Went to Devil's Tower and Little Big Horn along the way. Stayed there 6 nights.
Then we drove home (3 days, no stops, pull through sites, didn't unhook); spent 1 night in Cheyenne, Wy., 1 in Des Moines, Ia., home the next night.
