How far is Hong Kong airport from the Mainland Coach Station

There are many coaches at HKIA every day that can take you to Guangzhou. It takes around 4 hours on the way with the fare of 250 HKD per person.
The ticket service counters are located at Counter C10-13,Coach Station,Terminal 2.
And the boarding point is Coach Station, Terminal 2.
The distance is not far. You can just walk to the places according to the English signs at airport. :)