Beijing to Hongkong is about 2,450km and takes 9h by high speed train, which is more than 270km/h average as there are a few stops along the way. I believe that

Beijing to Hongkong is about 2,450km and takes 9h by high speed train, which is more than 270km/h average as there are a few stops along the way. I believe that the advertised speed is about 350km/h.