The Mering–Weilheim railway is a 54 km long single-tracked main line in the provinces of Swabia and Upper Bavaria in southern Germany. It runs from Mering near Augsburg via Geltendorf to Weilheim and is listed by the Deutsche Bahn as Kursbuchstrecke 985.

The Munich–Augsburg line connects Munich and Augsburg in the German state of Bavaria. It was built by the Munich-Augsburg Railway Company and opened in 1840. It was nationalised in 1846 and extended to Ulm in 1854. The line between Augsburg and Munich is a major traffic axis and part of the Magistrale for Europe from Budapest through Vienna to Paris.