If you are going to Aso, Kyushu, from Fukuoka Airport in Japan by motorcycle,
there is a recommended route.

Index
00:00 It's a comfortable course even in the hot summer.
01:51 Routes recommended by Google Maps(I don't recommend)
03:57 How to find fun areas in Aso with Google Maps
06:34 Touring courses I recommend
12:16 Difference in travel time