I tripped over this by chance, when helping someone maybe find a ‘biker friendly’ (ain’t they all) hotel.
The 10 routes look pretty good:
http://www.hotel-5doerfer.ch/motorrad/motorradtouren.htm
The web link has broken, as they so often do. Scroll down.....
The 10 routes look pretty good:
http://www.hotel-5doerfer.ch/motorrad/motorradtouren.htm
The web link has broken, as they so often do. Scroll down.....