What is the Corinth Canal and where is it located?
Posted on Mar 01, 2026 / Travel
The Corinth Canal is a famous man-made waterway in Greece that cuts through the narrow Isthmus of Corinth to link the Gulf of Corinth in the Ionian Sea with the Saronic Gulf in the Aegean Sea. It’s only about 6.3 km (3.9 miles) long, but it saves ships a long detour of several hundred kilometers around the Peloponnese peninsula. The cut was dug through limestone rock with steep walls and no locks, meaning sea level stays the same on both ends. Most modern big cargo ships can’t fit because it’s pretty narrow — about 21 m wide at the bottom and 24.6 m at the surface — so it’s mostly used by smaller boats and tourist traffic today. The canal technically separates mainland Greece from the Peloponnese landmass, making that southern region almost like an island. It’s also a huge historic and engineering attraction for visitors who come to see how they managed to cut such a deep channel in the 19th century. Boats move slowly through the canal in a one-way convoy system because of its confined space.
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