The Glonn is 51.7 kilometres (32.1 mi) long.

[1] It rises southeast of Mittelstetten in the district of Fürstenfeldbruck.

The Glonn flows through an agriculturally used area in the triangle between Augsburg, Freising and Dachau.

Larger places in its course are Odelzhausen, Erdweg, Markt Indersdorf, Weichs, Petershausen and Hohenkammer.

This article related to a river in Bavaria is a stub.