3 solutions:
Line 5 of the Metro
Bus line 48
by foot (5 minutes walk)
The major train stations in Paris are Gare du Nord, Gare de l'Est, Gare de Lyon, Gare Montparnasse, and Gare Saint-Lazare. To navigate between them easily, you can use the Paris Metro system, which connects all the train stations and provides a convenient way to travel around the city. You can also use taxis or ride-sharing services for a more direct route between stations.
To travel from Paris Gare du Nord to Versailles, you can take a train from Gare du Nord to Versailles Chantiers station. The journey takes about 45 minutes.
They are both on the same metro line and the journey takes about half an hour.
the driving distance is 760 meters, the walking distance is 500 meters (five minutes) between the Gare du Nord and the Gare de l'Est stations. You can also take the subway line 4 and get off at the next stop. Please note that the walk between the two is on a hill, and the shortest distance involves a flight of steps. If you are going from Est to Nord and have heavy luggage - take the metro or a bus!
Gare du Nord is one of six main train stations IN Paris. All the major tourist sites of Paris are within a few miles of this station, the busiest in Paris.
== == There is a bus which makes the rounds of the main line stations. from gare du Nord to Gare de Lyon you need bus no. 20. this is by far the simplest way, as using the metro or RER involves carrying luggage down and up stairs, changing trains and so on. you can buy the ticket on the bus. It costs 1 euro 40.
The station in Paris for Normandy is Saint Lazare, not la Gare du Nord
Bruxelles MidiEurostar is the brand name of the company running high speed trains London-Paris and London-Lille-Brussels through the Channel Tunnel.Eurostar uses the stations: St. Pancras (London), Gare du Nord (Paris), Bruxelles Midi (Brussels) and Lille Europe.Currently these are the only passenger trains operating through the tunnel.The Eurostar takes 2 hours 15 minutes between London and Paris.
Its very simple, take metro line 4 (dir chatelet or Porte d'Orleans) and get off at Garde de l'Est (pretty much the next stop). you can also walk via interconnected subway stations and get there that way.
They are the same train station Gare du Nord is the full, historic name. Paris Nord is the name it is known by today. Paris to Creil is only about 35 minutes. Trains also leave here for Northern destinations like Germany, Belgium, Netherlands, UK. Including TGV EuroStar and Thalys.
Paris Gare du Nord 18 Rue Dunkerque Paris,France
Taxi or underground (Paris "Metro") The underground trip is under 20 minutes, and is direct - no change of trains on the way.