I started out on the jetty at Percha. From there I ran along the eastern shore of the lake passing Berg, Leoni, Ammerland, and Ambach to Seeshaupt at the southernmost end of the lake. Once in Seeshaupt, I ran back to Percha jetty along the western shore of the lake passing Bernried and Tutzing to end back at where I started.
The route mostly followed the bike and / or walking path closest to the lake shore, however staying on publicly accessible ways (e.g. going around the Buchheim Museum since those paths seem not always open to the public). In some cases, there were short pieces run along the road.
Note that Liv had previously established the route & ran it in a slower time on 7/25/2019.