The fastest daytime connections (with a change at Figueres) take around 7h35.
The Euronight sleeper train (direct) takes 12h39.
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By train - overnight train 'Trenhotel' leaves Barcelona Estacion Del Norte at 9pm and arrives Paris Austerlitz station at 9am (making 4 short stops en route) By plane - depending on which airport you fly to: Barcelona to Paris Orly 1hr 45 mins Barcelona to Paris Charles de Gaulle 1 hr 55 mins
Barcelona has a train station, so it is possible to get there by train. However. where you are starting from (which you have not specified) may not have a station or indeed be connected to a rail network.
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London has eleven main line stations but if you are thinking about the train to Paris, it leaves from St. Pancras International.
You can take the train out of the station, but you can't take the station out of the train.
The Trocaderio train station in Paris is located near the Barriere Sainte-Marie. This station is on lines six and nine of the Paris Metro. The station opened on October 2, 1990.
The station is named Paris Gare Du Nord.
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The Eurostar does not go to Barcelona. Eurostar is the brand name of the high speed train service London-Paris and London-Lille-Brussels.
The entry is at the train station that takes you from Paris to the Disney site.
In order for "faster" to make sense, you need an alternative. It is certainly faster to take a train from Paris to Barcelona than walking or taking a boat. Compared to flying, it is slower. Compared to the bus, it is somewhat faster, but it depends more on the speed of the train and directness of the bus.
From the Gare de l'Est Roissypole there is a bus, Line: 350 to Paris Charles de Gaulle Airport Train Station. The Paris Charles de Gaulle Airport Train Station is trafficed by the TGV. There is no direct train line from Paris Est to GDC airport. The best is to go to the Gare du Nord and get the RER B.