The National Roads and Motorways in Greece constitute the main road network of the country. These two types of roads are distinct in terms of their construction specifications. Their main difference is that motorways adhere to higher quality construction standards than National Roads.
Greek National Road 9 is a single carriageway with at-grade intersections in the West Greece and Peloponnese regions. It runs along the west coast of the Peloponnese peninsula, from Patras to Methoni via Pyrgos. Its length is around 220 km (140 mi), making it the second-longest national highway of Greece.
The A1 motorway, also known as the Athens–Thessaloniki–Evzonoi (A.Th.E.) motorway, and formerly the Patras–Athens–Thessaloniki–Evzonoi (P.A.Th.E.) motorway, is the 2nd longest motorway in Greece with a length of 550 km. It is the principal north–south road connection in Greece, connecting the country's capital Athens with the regions of Thessaly and Macedonia, as well as the country's second largest city, Thessaloniki. It starts from Neo Faliro in Attica and continues north to reach the Evzonoi border station, on the Greek border with North Macedonia.
Greek National Road 3 is a single carriageway road in Greece. It connects Elefsina near Athens with the border of North Macedonia at Niki. It passes through Larissa and Florina. At Niki, it connects with the M5K motorway to Bitola. The section Kozani - Niki is also designated as the A27 motorway, part of which is operational as a 2-lane motorway.
National Road 5 is a single carriageway road in western Greece. It connects Antirrio, at the north end of the Rio-Antirrio bridge, with Ioannina in northwestern Greece, passing through Agrinio and Arta. The southern part, between Amfilochia and Antirrio, is part of the European route E55. The northern part, between Ioannina and Amfilochia, forms the European route E951. It passes on the east side of the Ambracian Gulf. In the future much of the traffic that used this road will be diverted to the new A5 motorway motorway, which has already taken over parts of the road. Νear Arta there is a 200m. tunnel which opened in 1969
Greek National Road 6 is a national road in north-central Greece. It begins at the port of Igoumenitsa and ends at Volos, passing through the towns Ioannina, Metsovo, Trikala and Larissa. The section between Metsovo and Volos is part of the European route E92. The road runs through five regional units and the regions of Epirus and Thessaly.
The A7 motorway, also known as the Corinth–Tripoli–Kalamata Motorway, or the Central Peloponnese motorway, is a controlled-access highway in the Peloponnese, Greece. The A7 begins just west of the Isthmus of Corinth, branching off from Greek National Road 8A. It connects Corinth and Kalamata via Tripoli.
Greek National Road 8 is a single carriageway with at-grade intersections in the Attica, Peloponnese and West Greece regions. It connects Athens with the cities of Corinth and Patras. Since the 1960s it has been replaced for most of its length with the National Road 8A, a limited-access toll road that bypasses most towns, as the major route to the Peloponnese. The National Road 8A has been upgraded to a motorway, the Olympia Odos (A8).
Thessaloniki is one of the regional units of Greece. It is part of the Region of Central Macedonia and its capital is the city of Thessaloniki.
Serres is one of the regional units of Greece, in the geographic region of Macedonia. It is part of the Region of Central Macedonia. Its capital is the city of Serres. The total population reaches just over 150,000.
Greek National Road 2 is a single carriageway with at-grade intersections, located in the regions of West Macedonia, Central Macedonia and East Macedonia and Thrace. It connects the Albanian border near Florina with the Turkish border near Alexandroupoli. Its section east of Thessaloniki has been replaced by the new A2 motorway. The section between the Albanian border and Thessaloniki is part of European route E86.
The A2 motorway, also known as the Egnatia Odos, is a tolled controlled-access highway in northern Greece that runs from the western port of Igoumenitsa to the eastern Greek–Turkish border at Kipoi. The entire route is part of the Greek section of the E90 road, which runs from Lisbon, Portugal in the west, and Zakho, Iraq in the east.
National Road 20 is a single carriageway road in northwestern Greece. It links the cities of Ioannina and Kozani via Konitsa and Siatista. It passes through the Ioannina, Kastoria and the Kozani regional units. Since the opening of the A2 motorway, it is no longer the fastest connection between Kozani and Ioannina. The section between Ioannina and Kalpaki is part of the European route E853.
Greek National Road 51 is a predominantly single carriageway road in the Evros regional unit of Greece. The road is a branch of the EO2 from Alexandroupolis and runs almost parallel to the Evros river from Ardani in the south to Kastanies in the north, before meeting the D.100 road at the Greece–Turkey border towards Edirne. The EO51 is about 128 km long, and forms part of the European route E85.
Greek National Road 4 is a single carriageway road in northern Greece. It connects Kozani with Chalkidona, passing through Veria.
Greek National Road 1 is the old single carriageway road connecting Athens with Thessaloniki and Evzonoi, the border crossing between Greece and North Macedonia. For most of its length, it has been replaced by the new A1 motorway.
The A6 motorway, also known as the Attiki Odos, is a toll motorway in Greece that forms the backbone of the motorway system in Athens, also known as the Attiki Odos after the concessionaire. Connecting Eleusis in the west with the Athens International Airport in the east, it forms the northern beltway of Athens. The length of the motorway is 48 kilometres (30 mi).
Greek National Road 7 is a single carriageway with at-grade intersections in the Peloponnese region in southern Greece. It connects the cities of Corinth and Kalamata, via Nemea, Argos, Tripoli and Megalopoli. It has been succeeded in importance by the A7 motorway (Corinth–Tripoli–Kalamata).
Kilkis is a city in Central Macedonia, Greece. As of 2021 there were 24,130 people living in the city proper, 27,493 people living in the municipal unit, and 45,308 in the municipality of Kilkis. It is also the capital city of the regional unit of Kilkis.
The A24 motorway is a partial controlled-access highway and limited-access road in northern Greece. The A24 runs from Thessaloniki to Nea Moudania, starting as a short motorway spur from the A2 Egnatia Odos motorway to the junction with the Thessaloniki Inner Ring Road at the neighbourhood of Efkarpia: the A24 continues as a limited-access expressway, following the Inner Ring Road towards Kalamaria, before turning off south towards Nea Moudania and Kallithea on the Chalkidiki peninsula.
