By train
| Paris has several SNCF (railway) stations. Below are the routes to the Institut Pasteur from the main stations. |
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| Montparnasse station |
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| This is the closest station to the Institut Pasteur. You can either walk about 15 minutes or take the metro (line number 6 direction Charles de Gaulle - Etoile) to take you from Montparnasse-Bienvenue station to Pasteur station (one stop). | |
| Saint Lazare station |
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| Take the metro (line number 12 direction Mairie d’Issy) from Saint-Lazare station to Pasteur station (about 20 minutes). | |
| Gare de Lyon station |
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| Take the metro (line number 14 direction Bibliothèque François Mitterrand) to Bercy station. Change to line 6 direction Charles de Gaulle - Etoile and get off at Pasteur station. (about 35 minutes). | |
| Austerlitz station |
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| Take the metro (line number 5 direction Place d’Italie) to the terminus at Place d’Italie. Change to line 6 direction Charles de Gaulle - Etoile and get off at Pasteur station. (about 30 minutes.) | |
| Gare de l’Est station |
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| Take the metro (line number 4) direction Mairie de Montrouge to Raspail station. Then change to line 6 direction Charles de Gaulle - Etoile and get off at Pasteur station. (about 35 minutes) | |
| Gare du Nord station |
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| Take the RER B direction Robinson or Saint-Rémy les Chevreuse to Denfert-Rochereau. Change and take the metro line 6 direction Charles de Gaulle – Etoile to Pasteur station. (about 35 minutes). | |