Many people use existing road trip itineraries as the starting point of their own, and if you’re visiting a new destination or travelling a classic road trip route then this is often the best option. Otherwise, start by making a list of everything you want to do and the places you definitely want to see, look at where all of these are on a map, and figure out an itinerary based on the time it will take to drive between them, including any other necessary stops along the way.