I also like Google Maps and it has been my absolute favorite route planning base for decades now.
I don't know of a better basis for creating routes.
Very importantly, Google Maps is also the best choice for me when it comes to evaluating or reviewing routes.
So, the route described by Wrench sounds interesting.
But, maybe I still have an ace up my sleeve.
Since Google Maps is the best basis, but the UI of these websites is definitely not intended for creating motorcycle routes, I use the tool called “Tyre”. For details and download see https://tyre2navigate.com/
“Tyre” is a Windows program, but it works with online maps on the web.
It is easy to use. Set points, use the rubber band to set the route shaping points or via points.
Save the route in GPX format on the PC
Transfer to the navigation device, done.
(Finished at least if you could ignore the destroying of the routes with the TREAD app)
So, where there's light, there's shadow
Tyre has direct access to OSM maps by default.
Tyre also has access to Google Maps maps by default, but the use of these maps is blocked by Google Maps for the time being.
Google itself requires an API key. The APi key is also available with a very large free quota of access from Google for 0 dollars. I haven't even come close to reaching the number of free accesses in my life.
You then "only" have to enter this API key in the "Tyre" program.
The programmer has also described the details, see https://www.janboersma.nl/gett/getkey/H ... 20(EN).pdf
Then nothing stands in the way of using it and believe me, it's a pleasure to work with it.
It couldn't be easier! (If it weren't for the TREAD app).
Try it out and maybe start with the OEM maps first.
This is exactly how the Google maps work, but then with satellite display and or directly with Streetview


