Levels of difficulty in trail running

Schwierigkeitsgrade beim Trailrunning
So that you can better classify the tour suggestions, we have compiled an overview of the difficulty levels easy, medium and difficult below, which can serve as a non-binding guideline.
Level of difficulty For who? Altitude & Distance
Blue - light
Beginner 100-500 hm / distance 5-10 km
Red - medium
Advanced 400-800 hm / distance 10-15 km
Black - heavy
Advanced/Pro's 800+ hm / distance 15+ km
Level of difficulty Blue - light Red - medium Black - heavy
For who?
Beginner Advanced Advanced/Pro's
Altitude & Distance
100-500 hm / distance 5-10 km 400-800 hm / distance 10-15 km 800+ hm / distance 15+ km