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Paris RER trains


Complementing its very efficient Metro system is the RATP's network of RER suburban train lines. These lines cross from the outskirts of Ile-de-France from one side to the other, north to south and east to west, through underground tunnels in Central Paris.


Back to by train from CDG





Paris RER suburban trains


RER (pronounce: EHR-uh-EHR, ('Réseau Express Régional' or Regional Express Railway) has a network of five suburban train lines that pass through Paris city centre, connecting outlying towns and suburbs with the capital


They run from 5.30 am until 30mins after midnight, 0.30am.

Often ignored by tourists they are a good and often quicker way of getting between main travel stations.

RER lines also connect Paris with its two busiest airports Roissy-Charles de Gaulle and Orly plus intercity train stations including Gare du Nord, Gare de Lyon, and Gare d'Austerlitz, so the chances are it might very well be the first mode of transport you use when you arrive in Paris. :

The entrances to the RER are identified by posts carrying a sign RER in white on a blue background.  The same ticket works here as on the metro.

To access the platforms you must pass through the ticket machines. On the RER, your ticket is checked on the way in and on the way out. Each line is identified by it colour, number and directions.

The RER's five lines are colour-coded:



  Red (A1, A2, A3, A4, A5)

Main stations/stops on this line in central Paris are Chatelet-les-Halles and Gare de Lyon. It runs west to La Défense A1,3,or 5 ( then onto suburbs) and east to Marne la Vallée - the stop for Disneyland Paris- line A4.


Blue (B2, B3, B4, B5)

Runs north (B3) to Charles de Gaulle airport and south (B4) to Orly Airport (via the Orlyval train from 'Antony' station) then on to Saint Remy sur Chevreuse. Main stations/stops on this line in central Paris are Gare du Nord, Chatelet-les-Halles and St. Miche-Notre Damel. 


Yellow (C1, C2, C3, C4, C5, C6, C7, C8)

 Main tourist stations/stops in central Paris on this line are St. Michel-Notre Dame, Musee d'Orsay, Invalides and Eiffel Tower. This line also for the chateau at Versailles C5 and for Gare d'Austerlitz .


Green (D1, D2, D3, D4)

Main stations/stops on this line in central Paris are Gare du Nord, Chatelet-les-Halles and Gare de Lyon. This line serves north and south suburbs of the city.


Purple (E1, E2, E4)

Main stations/stops on this line in central Paris are Haussmann-Saint-Lazare which is connected to Gare Saint-Lazare (train station) via walkways and Magenta which is connected to Gare du Nord (train station) via walkway station links. This line serves suburbs to the east of the city.




The letter designates the line, the number designates the branch of the line, as lines can divide into branches at one or both ends. As is the case of line B to Charles de Gaulle airport. That is why it is important you board the B3 train for this journey! Check the number relevant to you destination before boarding a train. 




Plan below shows main stations on branch lines and destination stations