What is the best route for a self-driving trip to Italy?

If you have enough time, why not walk around the entire Apennine Peninsula. This ring line can be said to be tailor-made for "trenches". In addition to the cities on the previous line, you can also consider going to the ancient cities of Perugia and Assisi in the Tiber Valley to look for medieval religious relics, or go to Check out San Marino, the pocket-sized "country within a country". A trip is equivalent to visiting another country and enjoying all the scenery and food you can see.