This trail is very difficult to rate on the single trail scale.
The first part of the trail is very easy and flowing with a few classic blue and even green sections. In between there is also a deep black section for about 100 meters where you should be able to move your rear wheel, and which is also partly exposed and quite steep. Here you can set the evaluation up to S3. After that it is a lot flatter, more flowing and easier.
The second part of the trail starts with a kind of forest road or double track with a couple of very short ascents and descents. That's comfortable to pedal through. The trail then suddenly becomes much narrower and becomes a nice single trail. Generally more flat than steep, but still with a few exposed spots. Difficulty in the range S1-S2. At the end of the trail there should be a well-known climbing rock - at least there were six climbers on my trip :-)
The third part of the trail starts after crossing the main road with a short nice trail next to a gravel forest road. But then you come back quite quickly on the now quite steep forest road where you "lose" a lot of meters without trails.