It rises north of the Wörthersee in the Ossiach Tauern, then running through Feldkirchen, going northeastwards passing the castle Burgruine Glanegg until it reaches Sankt Veit where it bends sharply towards south. It flows through the Zollfeld Valley, the historical heart of the Carinthian duchy, and through Klagenfurt, the state capital. At Ebenthal southeast of Klagenfurt is the confluence with the Glanfurt River, the Glan bends eastwards and finally flows into the river Gurk.
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