Three International airports (Paris, London and Brussels) are less than 2 hours train from Valenciennes. Nevertheless, the Charles De Gaulle airport in Paris is the most convenient one. Indeed, the TGV can be picked up under the airport to go to Valenciennes. To have more information, you can consult the web site of the French National Railway Company: the SNCF.
Place of Valenciennes in Europe:
Place of the congress in Valenciennes
The congress will take place down town on the campus of "Tertiales". The site of the congress, the hotels and the station will be on area of less 600 m of radius.