A621 motorway (Greece)

A621 motorway
A621 motorway
Αυτοκινητόδρομος Α621
	Route of the A621 motorway, in green
Route information
Length	2 km (1.2 mi)
Major junctions
South end	Gerakas (Stavros, A62)
North end	Doukissis Plakentias (A6)
Location
Country	Greece
Regions	Attica
Primary; destinations	Gerakas (Stavros); Doukissis Plakentias;
Highway system
	Highways in Greece; Motorways; National roads;

The A621 motorway (Greek: Αυτοκινητόδρομος Α621), formerly signed as the A642 motorway until 2024,^[1] is a short motorway in the Athens metropolitan area, Greece. It forms a connection between the A6 motorway (Attiki Odos) to the north, and the A62 motorway (Hymettus Peripheral Road, formerly signed as the A64 motorway) to the east.^[2] Its length is 2 km.

On 4 December 2015, the Greek government proposed to renumber the A642 as the A621:^[3] In practice, the renumbering had not taken place until 2024, because road signs were still showing the motorway as the A642. As of July 2024, the renumbering is being implemented due to road sign maintenance.^[1]

Route

The A621 is officially defined as a connection between the A6 (Attiki Odos) and A62 (Hymettus Ring Road) motorways, running between Agia Paraskevi to the south and Doukissis Plakentias to the north:^[3] the entirety of the A621 is tolled, since drivers have to pay a toll on the A6, the A621, or the southern entrances of exits 12 and 13 to access the A621.^[4]

Exit list

Municipality	km^[4]	mi	Exit	Name	Destinations	Notes
Agia Paraskevi	5.4	3.4	Υ4	Agia Paraskevi	A62 – Hymettus Ring Road	Northbound entry from and southbound exit to the A62 only
		Agia Paraskevi Tunnel (105 m northbound, 95 m southbound)
Paiania			Unnamed tunnel (275 m northbound, 205 m southbound)
Agia Paraskevi			Panagouli Tunnel (500 m)
7.16	4.45	13	Doukissis Plakentias	Doukissis Plakentias Avenue (Metro), Irakleitou Road	Toll station on southbound entry
		Underpass (160 m)
Chalandri	8.14– 8.27	5.06– 5.14	Doukissis Plakentias Avenue (Metro) Ano Chalandri, Local roads
8.06	5.01	12	Penteli	A6 / E94 – Elefsina Pentelis Avenue	Toll station on southbound entry
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Incomplete access Tolled

References

1 2 "Αντικατάσταση πινακίδων σήμανσης Αττικής Οδού" [Replacement of Attica Odos signs]. Odosimansi (in Greek). Thessaloniki. 11 March 2024. Archived from the original on 23 March 2026. Retrieved 8 October 2024.
↑ "Exit list A642". Motorway Exitlists: A6. Retrieved 21 February 2015.
1 2 Ministerial Decision DOY/oik/5776/2015, 4 December 2015 (FEK AAP' 253/21.12.2015, pp. 2097–2102). Archived from the original on 6 April 2025. Retrieved 28 October 2025.
1 2 "Attica Tollway Map". Nea Attiki Odos. Athens. 22 September 2023. Archived from the original on 12 January 2026. Retrieved 2 June 2026.

[a6-20240311-1] 1 2 "Αντικατάσταση πινακίδων σήμανσης Αττικής Οδού" [Replacement of Attica Odos signs]. Odosimansi (in Greek). Thessaloniki. 11 March 2024. Archived from the original on 23 March 2026. Retrieved 8 October 2024.

[exitlist642-2] "Exit list A642". Motorway Exitlists: A6. Retrieved 21 February 2015.

[gra-list-2015-3] 1 2 Ministerial Decision DOY/oik/5776/2015, 4 December 2015 (FEK AAP' 253/21.12.2015, pp. 2097–2102). Archived from the original on 6 April 2025. Retrieved 28 October 2025.

[naodos-tolls-4] 1 2 "Attica Tollway Map". Nea Attiki Odos. Athens. 22 September 2023. Archived from the original on 12 January 2026. Retrieved 2 June 2026.

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