The Swiss bit of Eurovelo 5 is basically national route number 3, which I did a couple of years ago and enjoyed. Not a lot of it is off-road though, if you are specifically after gravel. You could perhaps count the cobbles from the Gotthard pass to Airolo as off-road, and they are definitely a highlight.
The Swiss bit of Eurovelo 5 is basically national route number 3, which I did a couple of years ago and enjoyed. Not a lot of it is off-road though, if you are specifically after gravel. You could perhaps count the cobbles from the Gotthard pass to Airolo as off-road, and they are definitely a highlight.
https://www.schweizmobil.ch/en/veloland/route-03.html