My wife and I have been enthusiastic campervan travelers for six years. After an initial run-up on the motorway, we always travel on D-roads, taking it easy at around 80 km per hour. Often short trips, if we spot a nice camper spot along the way. So usually without a fixed plan. Favorite destinations in France are the Cévennes and the gorges in the South of France. We have also made wonderful trips through Denmark, Norway, and Sweden.