Tyrnavos is a municipality in the Larissa regional unit, of the Thessaly region of Greece. It is the second-largest town of the Larissa regiona…Tyrnavos is a municipality in the Larissa regional unit, of the Thessaly region of Greece. It is the second-largest town of the Larissa regional unit, after Larissa. The town is near the mountains and the Thessalian Plain. The river Titarisios, a tributary of the Pineios, flows through the town. Tyrnavos is bypassed by the Greek National Road 3. Tyrnavos is located south-southwest of Thessaloniki and Katerini, northwest of Larissa, east-northeast of Trikala and south-southeast of Elassona and Kozani. Here live an important community of Aromanians.