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● Green Line

Chennai Metro Rail (CMRL)
Active
17
Stations
17 Active
22 km
Line Length

Chennai Metro Green Line Overview

The Green Line (Line 2) of Chennai Metro runs about 22 km from Chennai Central to St. Thomas Mount with 17 stations, partly underground and partly elevated. It links Egmore, Anna Nagar, Koyambedu, Vadapalani, Ashok Nagar and Alandur. The first section, Koyambedu-Alandur, opened on 29 June 2015 as Chennai's first metro service, and the line was completed in May 2018. Explore the Chennai Metro Green Line route map, full station list, interchange stations, fares, first and last train timings and top attractions nearby.

Green Line Route Map 2026

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Chennai Metro Green Line Route Map 2026
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Green Line History, Facts & Expansion

  • The Green Line's Koyambedu-Alandur section opened on 29 June 2015, the first metro service in Chennai.
  • The line runs from Chennai Central to St. Thomas Mount.
  • It is about 22 km long with 17 stations, with an underground stretch through central Chennai and an elevated stretch in the west and south.
  • The last section, Nehru Park-Chennai Central, opened on 25 May 2018.
  • It interchanges with the Blue Line at Chennai Central and Alandur.
  • Vadapalani on the Green Line is an interchange with the Phase 2 Yellow Line (Corridor 4), which opened in October 2026.
  • It serves the Koyambedu bus terminus (CMBT) and the Chennai Egmore area.
  • The Green Line was the first line of Chennai Metro to open.
  • Egmore station serves Chennai Egmore railway station.
  • Koyambedu station serves the CMBT bus terminus and Koyambedu market.
  • Trains are 4-coach Alstom Metropolis sets.

Chennai Metro Green Line Phase-wise Expansion

Phase 1 - Stage 1 (2015) (Completed)

Koyambedu-Alandur opened on 29 June 2015.

Phase 1 - Stage 2 (2016-2018) (Completed)

Alandur-St. Thomas Mount opened in October 2016, Koyambedu-Nehru Park in May 2017, and Nehru Park-Chennai Central in May 2018.

Phase 2 Integration (2026 onwards) (Partly completed)

Corridor 4 interchange at Vadapalani opened in October 2026; Corridor 5 links planned near Koyambedu and St. Thomas Mount.

Future: Koyambedu-Pattabiram (Proposed)

DPR submitted in February 2025.

Green Line FAQs

The Chennai Green Line Metro route has 17 stations. The Green Line covers a distance of 22 km from Chennai Central to St. Thomas Mount.

The Chennai Metro Green Line has several interchange stations from where passengers can transfer to other metro lines. These interchange stations are as follows:

  • Alandur Metro - Interchange station between Blue Line and Green Line
  • Chennai Central Metro - Interchange station between Green Line and Blue Line

Yes, the Chennai Green Line Metro is operational today. It runs as per its scheduled time. However, for any updates regarding delays or maintenance work, it is advisable to check the official website or app of Chennai Metro Rail Limited (CMRL).

Chennai Metro Green Line Timings

Chennai Metro Green Line runs on regular schedule throughout the week between MGR Central (Chennai Central) and St Thomas Mount.

Chennai Metro Green Line Timings from Monday to Saturday:

  • First train: 05:02:00 AM (MGR Central (Chennai Central) to St Thomas Mount) | 05:01:00 AM (St Thomas Mount to MGR Central (Chennai Central))
  • Last train: 23:00:00 PM

Chennai Metro Green Line Timings on Sunday:

  • First train: 04:51:00 AM (MGR Central (Chennai Central) to St Thomas Mount) | 04:51:00 (St Thomas Mount to MGR Central (Chennai Central)
  • Last train: 23:17:00 PM

The Chennai Green Line metro is connected to the Indian Railways at Chennai Central metro station, which provides access to Chennai Central railway station.

To go from Chennai Metro Green Line to Blue Line, you need to change at Arignar Anna Alandur Metro Station. This is the only interchange station where both the lines join.

To reach the airport, take the Green Line to Arignar Anna Alandur Metro Station, then the Blue Line to the Airport Station which is directly connected to the terminals via a walkway.

Little Mount Metro Station on the Green Line is the closest metro station to Guindy Railway Station.

Yes, the Chennai Metro has planned an extension to the Green Line as part of Phase 2, which aims to expand the network to about 120 km with three new lines.

Top Attractions in Chennai

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