Starts at little parking place near Fleck. Goes to Sylvenstein, Fall, Border Achenkirch and Gasthof Hagen im Wald (whole via bavarica tyrolensis goes from munich via isartal or tegernsee to achensee). Mixed with paved bike road, dirt road and normal paved road. Just follow the signs (and track :-). With some short but steeper parts.
Apfelstrudel with vanilla ice cream recommended at Ghf. Hagen :-)