The Bolsterlanger Horn is a grass mountain in the Allgäu Alps in Bavaria. Because its 1,586-metre-high summit rises above Bolsterlang, it is the local mountain of this village. The Bolsterlanger Horn is part of the Hörner group and its southernmost peak.

Following the Appalachian Trail leave Unicoi Gap and run up and over Rocky Mountain, cross Indian Grave Gap, climb to the top of Tray Mountain and return to Unicoi Gap all via the AT.  It's a technical and rocky effort that's fairly popular for local trail runners along the AT. The route has a Strava segment.