I am travelling to Paris on Eurostar on Wednesday 7 July. Can you please tell me the best way to get from there to Montparnasse to pick up my connecting train to Libourne?
Your Eurostar will terminate at Gare du Nord. To get from Gare du Nord to Montparnasse take RER B train towards Robinson or St Remy les Chevreuse until Denfert-Rochereau, then transfer (same RER ticket) to Metro line 6 direction Charles de Gaulle Etoile until Montparnasse Bienvenue. Walk from this station to Gare Montparnasse to catch your train.