"At last, those who have been impatiently waiting for the TGV will be pleased. For the inhabitants of Boncourt, a trip to Paris is just as short as a trip to Lausanne. 2 hours 45 minutes, and you are in the City of Lights. This means that you can stroll along the Champs Elysées and do some shopping during the day and be back home at night. Great!"
Nina
Infos
Travelers arriving by TGV to the train station of Belfort-Montbéliard and wishing to continue to Porrentruy can take a bus from the new TGV station to the train station of Delle and from there a train to Porrentruy, St-Ursanne or Delémont.
Good to know
In the near future, the train line will be extended from Delle to Belfort. The bus shuttle service is only temporary (see timetable below as pdf document).