Line 4 (Athens Metro)

Προς Άλσος Βεΐκου/Γουδή
To Alsos Veikou/Goudi
White number four on an orange square
Katechaki shaft construction site
Construction site at the TBM's entrance shaft in Katechaki, March 2023
Overview
StatusUnder construction
LocaleAthens
Termini
  • Alsos Veikou
  • Goudi
Stations15
Colour on mapOrange
WebsiteOfficial website Edit this at Wikidata
Service
TypeRapid transit
SystemAthens Metro
OperatorSTASY
Depots
  • Sepolia
  • Katehaki
Rolling stockAlstom Metropolis
Daily ridership340,000 (EIB estimate)
History
Work began22 June 2021 (2021-06-22)
Planned opening2032
Technical
Line length12.8 km (8.0 mi)
CharacterDeep-level
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification750 V DC third rail
Route map

Planned section D
Petroupoli*
Ilion* Athens Metro Line 2
Pyrgos Vasilissis* Athens Suburban Railway
Nea Filadelfia*
Pefkakia* Athens Metro Line 1
Nea Ionia*
Alsos Veikou**
Galatsi**
Elikonos**
Kypseli**
Dikastiria**
Alexandras**
Exarcheia**
Akadimia**
Connection with Athens Metro Line 2
Kolonaki**
Evangelismos** Athens Metro Line 3
Planned section C
Pangrati*
Vyronas*
New Government Park*
Kaisariani**
Panepistimioupoli**
Ilisia**
Zografou**
Goudi**
Planned section B/E
Faros*
Filothei*
Sidera*
Olympic Stadium*
Paradissos*
OTE*
Marousi* Athens Metro Line 1
Pefki*
Lykovrysi*
Key
Line 4 (under construction)
Line 5 (planned)
non-passenger connector
(*) Planned     (**) Under construction

Line 4 of the Athens Metro is a future line that will run from Alsos Veikou to Goudi. Construction of the line started in mid to late-2021 and was scheduled to be completed in 2029 but is more realistically estimated to remain under construction until at least 2032.

Line 4 had been under consideration for many years. Its exact route was changed multiple times. One of the most famous routes was the U-shaped line from Perissos to Katechaki (which are current stations of lines 1 and 3 respectively), including a branch to Vyronas. However, the route from Alsos Veikou to Goudi was chosen, as it has the benefit of being the one passing from the densely populated areas of central Athens, such as Galatsi, Exarcheia, Kolonaki, Kaisariani and Zografou.

In the distant future, it will be extended further north to Lykovrysi, and to other important suburbs of Athens, like Marousi, with a possible future Lykovrysi-Acharnes extension to join the future Line 2 extension.