Did a road trip a couple months back from SoCal to Idaho, Montana and Wyoming. Visited friends, saw Bryce canyon, Yellowstone, and a lot of other places. 2700 miles altogether.
In the last 6 years we did several others, including two three week road trips, going to Chicago to the start of Route 66, and then doing the whole thing on the old roads, staying in the old motels, eating at local diners, etc. Did those trips in our Mustang convertible.
When the kids were young, we used to take a lot of long road trip with our RV trailer. Kids have been just about everywhere. Longest trip was 68 days, without staying more than a few at anyplace.