Otoyol routes in Turkey follow a regional based two-digit numbering system. All routes have the prefix O on all signage and maps. Motorways that start in the Marmara region are all single digit. Motorways that start in The Central Anatolia Region have a first digit of two. Motorways starting in the Aegean Region have a first digit of three. Motorways starting in the Mediterranean Region and Southeastern Anatolia Region have a first digit of five. The O-21A is the only motorway to have a letter assigned to it. Most motorways in Turkey have six lanes (3+3 lanes), however there are sections of some motorways with only four (2+2) lanes. The motorways extended to 28 of the country's 81 provincial-level administrative divisions.

As of October 2024, there are 3,796 km of toll motorways network (otoyollar) in service.

List of Otoyol routes Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Built Notes 20.5 12.7 in Osmaniye K.(K1) Bakırköy, Istanbul Bağdat Avenue in Söğütlüçeşme K.(K15) Kadıköy, Istanbul 1973 Istanbul First Beltway 36.9 22.9 in Mahmutbey doğu K.(K20), Istanbul in Anadolu otoyolu K.(K10) Istanbul 1988 Istanbul second Beltway 246.9 153.4 Edirne Batı K.(K1) near Edirne Mahmutbey Doğu K.(K20) in Bağcılar, Istanbul 1987 372 231.2 Anadolu Otoyolu K10 junction in Ümraniye- Ataşehir, Istanbulİstanbul motorway near Sincan, Ankara 1984 409.4 254.4 Muallim köy K7-1 junction in Gebze, Kocaeliistanbul motorway map in Bornova, İzmir 2016 till 2019 Section from Bursa North to Gebze including Osman Gazi Bridge opened in 2016. 101 62.8 near Malkara, Tekirdağ near Lapseki, Çanakkale 2022 Section from Malkara to Lapseki including 1915 Çanakkale Bridge, the longest suspension bridge in the world, opened in 2022. 275.2 171.1 near Kınalı,Silivri Istanbul near Akyazı, Sakarya 2016 till 2020 Yavuz Sultan Selim Bridge istanbul Third Beltway 110 68.4 Road forms complete ring around Ankara Road forms complete ring around Ankara 1987 Ankara beltway 399.5 248.3 near Gölbaşı, Ankara near Tarsus, Mersin 1984 till 2020 32 19.9 near Çakmak Bucağı, Konya near Eminlik, Niğde 1992 34.1 21.2 near Çağlayan, Bursa near Turanköy, Bursa 2006 60.4 37.5 in Menemen, İzmir in Balçova, İzmir 1993 till 2006 Izmir Beltway 127.8 79.4 in Buca, İzmir in Aydın 1996 till 2004 165 102.5 in Aydın in Denizli 2023 till 2024 77.7 48.3 in Çeşme, İzmir in Balçova, İzmir 1992 till 1996 76 47Port of Çandarlı near Çandarlı, İzmir in Menemen, İzmir 2019 99.2 61.6 in Çeşmeli, Mersin in Adana 1992 365 226.8 in Adana near Şanlıurfa 1992 150 93.2 near Ceyhan in İskenderun 1993 35 21.7 in Gaziantep in Gaziantep 2013Gaziantep Beltway

Projects

Under Construction

Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Opens Notes 45 28 near Nakkaş, Istanbul near Başakşehir, Istanbul 2026 52 32.3 in Kızkalesi, Mersin near Çeşmeli, Mersin 2026 120 74.6 in Mamak, Ankara in Delice, Kırıkkale 2026 Part of Ankara-Samsun Motorway. Delice-Samsun section still in planning phase. 122 75.8 in Serik in Alanya 2027 Part of Afyon–Antalya–Alanya Motorway. Afyonkarahisar-Burdur-Antalya-Serik section still in planning phase. 127 78.9 near Malkara, Tekirdağ near Kınalı, Istanbul 2027 Part of Kınalı-Balıkesir Motorway. 19.2 11.9 near İskenderun, Hatay near Topboğazı, Hatay 2028 İskenderun-Antakya Motorway 31.3 19.5 near Dörtyol, Hatay near Hassa, Hatay 2030 Dörtyol-Hassa Motorway

Tender Phase

Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Tender Date Notes 130 80.8 in Sivrihisar, Eskişehir in Tulumtaş, Ankara Part of Izmir–Ankara Motorway. İzmir-Sivrihisar section still in planning phase. 454 282.1 near Şanlıurfa near Habur, Silopi, Şırnak Şanlıurfa-Mardin-Habur Motorway (including link to Diyarbakır) (border crossing)

Planning Phase

Number Length (km) Length (mi) Northern or western terminus Southern or eastern terminus Tender Date Notes 276 171.5 near Akyazı, Sakarya near Sincan, Ankara N/A Central Anatolian Motorway 30 18.1 in Taşucu near Kızkalesi, Mersin N/A 89 55.3 near Pozantı, Adana near Ceyhan, Adana N/A Adana peripheral motorway 12 7.46 near Sasalı, İzmir near İnciraltı, İzmir N/A - Gulf of İzmir Passage Project between Çiğli (Sasalı) and Balçova (İnciraltı); including one undersea tunnel and one bridge 41 25.5 near Menemen, İzmir near Buca, İzmir N/A İzmir 2. peripheral motorway 155 96.3 in Denizli near Bucak, Burdur N/A Denizli-Burdur section of Aydın-Denizli-Burdur Motorway 137 85.1 near Lapseki, Çanakkale near Balıkesir N/A Lapseki-Balıkesir section of Kınalı-Balıkesir Motorway 350 217.5 near Afyonkarahisar near Serik, Antalya N/A 408 253.5 near Turgutlu, Manisa near Sivrihisar N/A Sivrihisar-İzmir section of Ankara-İzmir Motorway 231 143.5 near Kestel, Bursa near Sivrihisar, Eskişehir N/A Sivrihisar-Bursa Motorway 303 188.3 near Samsun near Delice, Kırıkkale N/A Delice-Samsun section of Ankara-Samsun Motorway 144 89.5 near Bafra, Samsun near Ünye, Ordu N/A Bafra-Samsun-Ünye Motorway 137 85.2 in Gerede, Bolu in Ilgaz, Çankırı N/A Part of . Ilgaz-Merzifon-Koyulhisar-Pülümür-Horasan-Gürbulak sections still in planning phase. 183 113.7 near Ilgaz, Çankırı near Merzifon, Amasya N/A 919 571 near Merzifon, Amasya near Gürbulak, Doğubayazıt, Ağrı N/A (border crossing) 91 56.6 near Yalova near İzmit, Kocaeli N/A 440 273.4 near Afyonkarahisar near Ulukışla, Niğde N/A Afyonkarahisar-Konya-Ereğli-Niğde (Ulukışla) Motorway 105 65.3 near Bozüyük, Bilecik near Afyonkarahisar N/A Bozüyük-Afyonkarahisar Motorway 200 124.3 near Alanya, Antalya near Silifke, Mersin N/A Alanya-Silifke Motorway 105 65.3 near Düzce near Zonguldak N/A Düzce-Zonguldak Motorway 500 310.7 near Delice, Kırıkkale near Refahiye, Erzincan N/A Delice-Sivas-Refahiye Motorway 600 372.8 near Nevşehir near Diyarbakır N/A Nevşehir-Kayseri-Malatya-Diyarbakır Motorway 220 136.7 near Sivas near Malatya N/A Sivas-Malatya Motorway 50 31.1 near Şanlıurfa near Akçakale, Şanlıurfa N/A Şanlıurfa-Akçakale Motorway (border crossing) 475 295.2 near Diyarbakır near Gürbulak, Doğubayazıt, Ağrı N/A Diyarbakır-Gürbulak Motorway (border crossing) 540 335.6 near Trabzon near Kahramanmaraş N/A Trabzon-Refahiye-Malatya-Kahramanmaraş Motorway 250 155.4 near Pasinler, Erzurum near Türkgözü, Posof, Ardahan N/A Pasinler-Türkgözü Motorway (border crossing) 460 285.8 near Rize near Diyarbakır N/A Rize-Erzurum-Diyarbakır Motorway 80 49.7 near Çandarlı, Dikili, İzmir near Savaştepe, Balıkesir N/A Çandarlı-Bergama-Savaştepe Motorway 90 55.9 near Aydın near Muğla N/A Aydın-Muğla Motorway 75 46.6 near İpsala, Edirne near Malkara, Tekirdağ N/A Malkara-İpsala Motorway (border crossing) 130 80.8 near Havsa, Edirne near Kavakköy, Gelibolu, Çanakkale N/A Havsa-Gelibolu Motorway 180 111.9 near Lapseki, Çanakkale near Karacabey, Bursa N/A Lapseki-Karacabey Motorway 34 21.1 near Ovaakça, Bursa near Konaklı, Bursa N/A Bursa Northern Ring Road

See also List of motorway tunnels in Turkey List of highways in Turkey Transport in Turkey

External links Official Motorway maps Detailed highway map

References