Start with a practical route
Choose a manageable region and mark a few places that matter most. Connect them using current maps, then look for public viewpoints, walks and towns that give you a reason to stop. Avoid building every day around the longest possible drive.
Check whether roads, passes, ferries and parking areas are open for the intended season. Local rules, roadworks and access requirements can change; use official road and transport sources before departure.
Leave margin
Allow time for weather, food, refueling or charging, and rest. Download maps for areas with limited reception and keep a backup route that avoids an exposed pass or delayed crossing.
Check vehicle requirements and local driving rules for every country on the itinerary. Never stop in a dangerous place for a photograph; use designated pullouts or parking areas.