Taken verbatim from http://en.wikipedia.org/wiki/High-speed_rail_by_country.html.

Country Total network length (km) Scheduled trains Test run speed record
Austria 230 km/h 275 km/h
Belgium 326 300, 250 km/h 347 km/h
China 6003 431 km/h maglev
350, 300, 250, 200 km/h conventional
502 km/h maglev
394 km/h conventional
Finland 60 220 km/h 255 km/h
France 1700 320, 300, 280, 210 km/h 574 km/h
Germany 1290 300, 280, 250, 230 km/h (conventional) 550 km/h maglev
406 km/h conventional
Italy 814.5 300, 260, 200 km/h 368 km/h
Japan 2459 300, 275, 260 km/h (conventional) 581 km/h maglev
443 km/h conventional
Norway 60 210 km/h 260 km/h
Portugal 314 220 km/h 275 km/h
Russia 649.7 210 km/h 260 km/h
South Korea 240.4 300, 240 km/h 355 km/h
Spain 1272.3 350, 300, 250 km/h 404 km/h
Sweden 0 200 km/h 303 km/h
Taiwan 335.5 300, 240 km/h 315 km/h
Turkey 245 250 km/h 303 km/h
United Kingdom 0 300, 200 km/h 335 km/h
United States 0 125 mph (201 km/h), 150 mph (240 km/h) 164 mph (264 km/h)