For example
We are planning a ride that goes from Imst in Austria over Fernpass to Erhwald
Obviously riding that on the road is a no-go, I rode it in car many a times and even it car it sucks.
Apparently there's several bike paths around and majority of them seem on tarmac
So this is the use case I am looking for, to verify if the bike path is rideable all the way on a road bike or if there's some nasty hidden surprise.