Here is a map showing high speed railway connections in Europe. German ICE trains usually peak at 300 km/h on selected tracks while the French TGV can go up to 320 km/h.
https://en.wikipedia.org/wiki/High-speed_railway_line#/media...
There is a huge project upgrading existing railway tracks throughout Germany to make it possible getting from Berlin to Munich in under 4h by 2017.