Magerrain, Mountain summit in the Glarus Alps, Switzerland

Magerrain is a 2,524-metre limestone summit of the Glarus Alps on the border between Glarus and St. Gallen. Three ridges run north, southeast and west, the last two carrying the cantonal boundary. Its northeast face is steep and rocky, the south wall drops almost vertically, and only the northwest grass slope offers an easier ascent.

The Magerrain is built of limestone, unlike many peaks on its western ridge, which consist of Verrucano rock. Its three ridges run north, southeast and west, and the cantonal border between Glarus and St. Gallen follows the last two. The mountain rises 22 metres higher than the Spitzmeilen about 1.5 km to the southeast, yet is less known and less developed.

The Magerrain lies on the cantonal border between Glarus and St. Gallen, and the boundary follows its west and south-east ridges. The nearest settlement is Engi, on the Glarus side to the south. The peak stands 22 metres higher than the Spitzmeilen about 1.5 km to the south-east, yet is less known and less developed for access.

Several marked hiking trails lead up from Unterterzen toward the summit and nearby passes. A cable car to Maschgenkamm provides an easier way to reach starting points for different routes on the mountain.

The mountain has a prominence of 357 meters and stands as a natural waypoint between different alpine zones. This position makes it an important landmark despite being less well-known than surrounding peaks.