Greek National Road 90, also known as VOAK (Northern Crete Highway: Greek: Βόρειος Οδικός Άξονας Κρήτης, VΟΑΚ) is the longest National Highway on the island of Crete, Greece. It runs along the north coast of the island Crete. It connects Kissamos in the west with Siteia in the east, via Chania, Rethymno, Heraklion and Agios Nikolaos. The planned A 90 motorway is essentially the upgrade of this highway which it will replace after its completion.