Kazlų Rūda is a city in the Marijampole County in southern Lithuania. It is located 27 km north from Marijampolė. The city is surrounded by fore…Kazlų Rūda is a city in the Marijampole County in southern Lithuania. It is located 27 km north from Marijampolė. The city is surrounded by forests, but a railway line crosses the city and divides it into almost equal parts.