There are 6 runways on Amsterdam Airport Schiphol: de Polderbaan, de Kaagbaan, de Buitenveldertbaan, de Aalsmeerbaand, de Zwanenburgbaan, en de Oostbaan.
The newest, and longest runway, is the Polderbaan. This one opened in 2003 and is 3800 meters long. The Oostbaan is mainly used for small aircrafts.
See the map of runways:
