The Dardanelles (/dɑːrdəˈnɛlz/; Turkish: Çanakkale Boğazı, lit.
 'Strait of Çanakkale', Greek: Δαρδανέλλια, romanized: Dardanéllia), also known from Classical Antiquity as the Hellespont
(/ˈhɛlɪspɒnt/; Classical Greek: Ἑλλήσποντος, romanized: Hellēspontos, lit.
 'Sea of Helle'), is a narrow, natural strait and internationally significant waterway in northwestern Turkey that forms part of the continental boundary between Europe and Asia, and separates Asian Turkey from European Turkey.
One of the world's narrowest straits used for international navigation, the Dardanelles connects the Sea of Marmara with the Aegean and  Mediterranean Seas, while also allowing passage to the Black Sea by extension via the Bosphorus.
The Dardanelles is 61 kilometres (38 mi) long, and 1.2 to 6 kilometres (0.75 to 3.73 mi) wide, averaging 55 metres (180 ft) deep with a maximum depth of 103 metres (338 ft) at its narrowest point abreast the city of Çanakkale.

Most of the northern shores of the strait along the Gallipoli Peninsula (Turkish: Gelibolu) are sparsely settled, while the southern shores along the Troad Peninsula (Turkish: Biga) are inhabited by the city of Çanakkale's urban population of 110,000.

Together with the Bosphorus, the Dardanelles forms the Turkish Straits.
The Dardanelles (/dɑːrdəˈnɛlz/; Turkish: Çanakkale Boğazı, lit. 'Strait of Çanakkale', Greek: Δαρδανέλλια, romanized: Dardanéllia), also known from Classical Antiquity as the Hellespont
(/ˈhɛlɪspɒnt/; Classical Greek: Ἑλλήσποντος, romanized: Hellēspontos, lit. 'Sea of Helle'), is a narrow, natural strait and internationally significant waterway in northwestern Turkey that forms part of the continental boundary between Europe and Asia, and separates Asian Turkey from European Turkey. One of the world's narrowest straits used for international navigation, the Dardanelles connects the Sea of Marmara with the Aegean and  Mediterranean Seas, while also allowing passage to the Black Sea by extension via the Bosphorus. The Dardanelles is 61 kilometres (38 mi) long, and 1.2 to 6 kilometres (0.75 to 3.73 mi) wide, averaging 55 metres (180 ft) deep with a maximum depth of 103 metres (338 ft) at its narrowest point abreast the city of Çanakkale.
Most of the northern shores of the strait along the Gallipoli Peninsula (Turkish: Gelibolu) are sparsely settled, while the southern shores along the Troad Peninsula (Turkish: Biga) are inhabited by the city of Çanakkale's urban population of 110,000.
Together with the Bosphorus, the Dardanelles forms the Turkish Straits.
Dardanelles