Consult the national timetables on www.belgianrail.be.
These timetables include bus services.
In these timetables, the train station at Brussels Airport is called "Brussels Airport-Zaventem";
and the bus station at Brussels South Charleroi Airport is called "Charleroi South Airport".
Train stations at walking distance from the conference venue are "Mons" (1.5km) and "Nimy" (1.1km).
From neighboring locations, find your itinerary and timetable on www.infotec.be.
The city of Mons is well-served by the E19/E42 motorways, exit 24.