A1 Motorway Athens – Thessaloniki – Evzonoi (PATHE)

Length is the sum of the three sections Greek Wikipedia lists (6.4 + 6.4 + 3.7 km). Part of Kifisos Avenue (Neo Faliro – Metamorfosi), the only section of the A1 without tolls and without a concessionaire.

Length is the sum of the sections Greek Wikipedia lists between Agioi Anargyroi and Schimatari. Its first row, Agioi Anargyroi – Varympompi (13.2 km), carries the date 29 August 1962, when that stretch of the new National Road opened. Includes the Metamorfosi interchange with the A6, where Nea Odos's concession section begins.

Length is the sum of the three sections Greek Wikipedia lists (8.6 + 13 + 5.7 km). Starts at the Schimatari interchange with the A11 to Chalkida.

Length is the sum of the nine sections Greek Wikipedia lists between Yliki and Agios Konstantinos. Ends at the Longos interchange, where the new Maliakos alignment begins.

Two bypasses on a new alignment: Agios Konstantinos (Longos to the exit of the Knimida tunnel, 11.4 km) and Kamena Vourla (Knimida tunnel to Skarfeia, 9 km). Opened on 14 September 2007 except the Lamia-bound carriageway of the last kilometre of the Kamena Vourla bypass, announced for October. The ministry blamed a delay from July on geological problems. Tunnels: Aspronerion, Knimida and Dichaloremata.

Length is that of the Skarfeia – Thermopylae contract (17.4 km) given by Kathimerini. Greek Wikipedia lists Skarfeia – Thermopylae (12 km) and the Thermopylae bypass (5 km) as separate sections, and dates the bypass to 22 September 2008; Ta Nea reported its opening on 18 September 2008.

Southern part of the 17.3 km Thermopylae – Agia Marina contract, from the Thermopylae interchange to the new Spercheios river bed near Anthili, where the Lamia bypass begins. Length derived: 17.3 km contract less Roditsa – Agia Marina (8.1 km); no source gives it directly. Opening date disputed: Greek Wikipedia's table gives 23 April 2008, its Maliakos article gives 22 September 2008 for Thermopylae – Roditsa.

Includes the new Spercheios bridge and the upgraded Roditsa (Lamia) interchange. Built by the State and originally due in September 2009. In September 2008 the minister expected 4 of the 23 km then left on the horseshoe by mid-2009, the other 19 km being the Stylida bypass. Greek Wikipedia states the original award was signed in autumn 2008. Works were finished in September 2014. Operated by Kentriki Odos.

Length: Roditsa – Agia Paraskevi 3.6 km (Greek Wikipedia) plus Agia Paraskevi – Agia Marina 4.5 km (Kathimerini). Includes the Mavromantila toll station, opened in 2015.

Bypass of Stylida and Karavomylos with the Stylida tunnels, the last gap in the Maliakos horseshoe. Kathimerini gives 19.2 km in 2015 and 19.3 km in 2007. Built by the State; contractual completion was September 2010. Greek Wikipedia states the original award was signed in autumn 2008. Works were finished in September 2014. Operated by Kentriki Odos, with side toll stations at Agia Marina and Stylida.

Start of the Aegean Motorway concession (Raches – Kleidi), which took over operation and upgrade of this existing motorway from 2008.

Length is the sum of the three rows Greek Wikipedia lists (6.8 + 1.5 + 7.5 km).

Includes the Velestino interchange to Volos (A12), completed in 2014.

New alignment bypassing the Tempi valley through twin tunnels T1 (2 km) and T2 (6 km, officially Marinos Antypas – Rigas Feraios), the longest road tunnel in south-east Europe. The concession was ratified by Law 3605/2007. Contract duration is the concession's design and construction period: from the concession start on 9 March 2008 to 9 September 2012 (54 months), later reset to 9 August 2015. Greek Wikipedia's section table gives 14 km for Evangelismos – Rapsani; the concessionaire and ministry give 25–26 km for both new sections together.

Existing motorway between the two new Tempi bypass sections; upgraded under the Aegean Motorway concession.

Bypass of the Platamonas bends through the twin T3 tunnel (2.7 km). Greek Wikipedia's table names the section Neoi Poroi – Skotina, 9.9 km; the ministry calls it Platamonas – Skotina. In August 2008 the T3 portals were being prepared while T2 was started. Contract duration: concession design and construction period, 9 March 2008 to 9 September 2012 (54 months).

Twin tunnels under Katerini, the first on the A1: Filippos (1,095 m, southbound) and Alexandros (1,100 m, northbound). Heavy maintenance of the Alexandros tube began in March 2022.

Ends at the Kleidi interchange with the A2 Egnatia Odos, the northern end of the Aegean Motorway concession. The Korinos and Aiginio interchanges were added under that concession.

Common section with the A2 Egnatia Odos (E90), from the Kleidi interchange to the Axios interchange near Chalastra. Built as Kleidi – Gallikos river in the first phase of the motorway upgrade.

The only part of the A1 not yet a motorway: one lane each way with no central barrier, opened in 1973 as part of the National Road. Being rebuilt to 2 × 2 lanes with emergency lanes, a central barrier and new interchanges at Prochoma and Aspros, starting with a new Evzonoi-bound carriageway. The concession sets five years for the works; a local estimate reported in December 2025 was a little over three. Length 44 km as reported by ERT; Greek Wikipedia gives 48 km in its introduction and 44.3 km across its section rows. The Gefyra interchange, a motorway-standard junction since 1988, lies inside.

The first section of the axis built to motorway cross-section, ending at the Evzonoi border crossing with North Macedonia. Operated by New Egnatia Odos Concession, which is to upgrade its barriers, signage and pavement.