I planned to do this route for some time and finally had time!
It was snowing for the first 2hs and the trails slightly covered with snow.
At kilometer 18 for some reason my muscles cramped and it was quite hard for me to finish. I was happy to finish it at all - especially since I fantasized about hitchhiking back to my car for about 14 km :)
Of course I didn‘t reach my time goal, maybe I need to run it again!
if someone plans to run this route: Tegernsee and all the trails near the lake are crazy busy. Even today when the weather was really bad. Start really early if you plan to run on a weekend day.