Your total trip with all stops is around 200 miles / 320 km, taking roughly 3.5 hours for the whole trip. If you want to see every small town along the way, you can get a full list of cities between SPK and HKD.
Start from Sapporo Metropolitan Area.
Muroran, Japan is stopping point #1 after driving about 110 km (70 miles) or 1 hour.
Finally, Hakodate Airport is your destination after driving about 210 km (130 miles) or 2 hours. Your total trip with all stops is around 320 km or 200 miles, taking roughly 3.5 hours for the whole trip.
Travelmath helps you figure out where to stop when planning a long road trip from one location to another. The best stopping point for an overnight hotel stay or a break from driving often depends on how far or how long you want to drive before pausing to rest. You can find the closest city to your stopping point to look for hotels, or explore other cities and towns along the route. Use this as a road trip planner when you're driving cross-country or mapping a route with multiple stops.