Otoyol 20

Otoyol 20 (Motorway 20), O-20, Ankara Çevre yolu (Ankara Beltway), is a motorway in Ankara, Turkey that forms the ring road of the city. The 110 km long beltway connects in the northwest to the Anatolia Motorway, and in the south to Ankara-Adana Motorway.

The beltway is a four lane motorway in both directions on its length.

The beltway is the only ring motorway in Turkey to form a complete ring.