MTB-rit

Nice ride,
BUT: some parts are not bike trails but hike trails so be prepared to walk or find a detour.
When you pass the town Bivels and it's pedestrian/bike bridge you come to a climb the last part of that climb/decent is a tricky hike trail.
You will be rewarded with a great view if you do decide to take that trail.
Possible detour (didn't try it) but perhaps don't go left up the climb but go right and stay next to the river.
When you come to highway 10 your back on track.

Some other parts used to be rideable bike trails but either lack of maintenance or (nearly) no use make them unusable.
The last +/- 2km of the trail before you reach the bridge at Gemünd are best to be avoided.
Possible detour (didn try it) is when desending you automatically get forced the wrong way down a rocky trail (happened to me to) because the original trail is hardly visible.
When you come to a crossing keep going strait and when you reach highway 10 go to the right and your back on track.