Transportation

Besançon can be accessed :

By train

The Paris-Besançon TGV leads to the Viotte Station or the Franche-Comté TGV station . The Besançon-Viotte station is the one you should target to reach the colloquium venue.
The TGV coming from Lyon or Strasbourg leads to the Viotte station.
To get more information refer to the SNCF and bus network Ginko sites.

By plane

the airports closest to Besançon are:

1- Paris-Charles de Gaulle airport , then take the train to Paris Gare de Lyon, then the high speed train (TGV) to Besancon (1h40)
2- Euroairport Basel-Mulhouse : by car to Besançon (2h), to Belfort (45 min), to Montbéliard (55 min)
3- Geneva airport : by car to Besançon (2h30), to Montbéliard (3h), to Belfort (3h10)
4- Lyon Saint Exupery airport : by car to Besançon (2h30),  to Montbéliard (3h), to Belfort (3h10)