What Is the Length of the Canadian-U.S. Border?


Quick Answer

The United States and Canada share a border 5,525 miles in distance. The two countries share the longest international border in the world - which includes 119 border crossings - with an estimated 140,000 vehicles and 300,000 travelers crossing the border each day.

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Full Answer

The busiest border crossing in North America is that between Detroit and Windsor, Ontario, Canada, with nearly $500 million of trade passing through the Ambassador Bridge daily. While Alaska is the state that shares the longest border - roughly 1,539 miles - New York receives the most visits from Canada and also sends the most travelers over the border.

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