Zurich is situated in the very heart of Europe and at the foot of the Swiss Alps. The city is the ideal base from which to explore Switzerland but also Europe. Zurich Airport, which has direct connections to 170 destinations all over the world , is just a 10-minute train ride away from the centrally located Zurich Main Station (Zurich HB). 

Zurich Maiin Station (Zurich HB) is a hub in Europe for railway transportation. On a daily basis and several times per day, Zurich is directly connected to capital and major cities in Europe, e.g., Berlin, Hamburg, Frankfort, Vienna, Paris, Milan, Bologna, Budapest, and much more with the European train network (e.g, London, Rome, Barcelona, Madrid, Prague, Amsterdam, Zagreb). Therefore, for participants from Europe, the train will offer a convenient and reliable transport medium that will minimize the carbon footprint in transportation to Zurich.

Detailed information on travelling to Zurich by train and about the Swiss travel system is available here.

Have a look at all the European cities with train connections to Switzerland:
Have a look at examples of worldwide flight routes and their duration to destination Zurich