how wide is english channel at dover

At Dover, the English Channel is about 21 miles wide, or roughly 34 kilometers. That is the Channel’s narrowest point, between Dover and Calais/Cap Gris-Nez.

Quick Scoop

• Width at Dover: about 21 miles / 34 km.

• Why it matters: this is the narrowest part of the English Channel.

• Nearby crossing: it is the same stretch used by the Channel Tunnel route between England and France.

A simple way to picture it: on a clear day, the French coast can be visible from Dover because the gap is relatively short.