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Marathea (Greek: Μαραθέα, before 1957: Βάναρη - Vanari) is a village and a community in the municipal unit of Sellana, Karditsa regional unit, Greece. It is situated in a flat rural area on the right bank of the river Pineios, where cotton is cultivated. It is 9 km southwest of Farkadona, 10 km northwest of Palamas, 19 km northeast of Karditsa and 20 km east of Trikala. The community Marathea includes the village Korda.