Rail

RAIL

From Germany
via Czech Republic: Berlin/Dresden > Prague > Brno > Bratislava
via Austria: Cologne/Frankfurt/Munich > Salzburg > Vienna > Bratislava

From Poland
via Czech Republic: Warsaw/Katowice > Ostrava > Břeclav > Kuty > Bratislava
direct: Krakow > Cadca > Zilina > Trencin > Trnava > Bratislava

From Austria
Vienna > Marcheg > Devinska Nova Ves > Bratislava (Main Station)
Vienna > Kittsee > Bratislava-Petrzalka

From Hungary
Budapest > Györ > Rajka > Bratislava
Budapest > Szob > Sturovo > Nove Zamky > Galanta > Bratislava

Detailed information about the connections can be found at cp.atlas.sk.
Here you can find the map of Bratislava with the festival location.