The Bavarian Prealps are a mountain range within the Northern Limestone Alps in south Germany. They include the Bavarian Prealp region between the river Loisach to the west and the river Inn to the east; the range is about 80 kilometres long and 20–30 kilometres wide. The term is not defined politically, but alpine-geographically because small areas of the Bavarian Prealps lie in Tyrol.
The term is not to be confused with the Bavarian Alps or the Bavarian Alpine Foreland. These terms include the whole of the alpine region and the whole Alpine Foreland on Bavarian state territory.
Wikipedia https://en.wikipedia.org/wiki/Bavarian_Prealps
Coordinates 47°39'4.193" N 11°41'25.689" E