Arrival by Train
Probably the best way to travel to Berlin by train is using the high speed services from Hannover, Nuremberg, Hamburg or Fraunkfurt by ICE (InterCityExpress). The trains stop at Berlin Hauptbahnhof (Main Station). You can look up your connections and timings at the Online Travel Service of the Deutsche Bahn.
Participants planning to travel directly to the BCC by train should alight at Hauptbahnof and then change to a local train (S-Bahn) to Alexanderplatz. Calculated routes can also be found at the Travel Service of Deutsche Bahn.