Which country has the longest coastline in the world?

Canada possesses the longest coastline of any country in the world, totaling approximately 202,080 kilometers (125,570 miles). This extensive coastline is due to its numerous islands and its location along the Pacific, Atlantic, and Arctic Oceans. The sheer size of Canada, combined with its geographic complexity, contributes to this vast coastline, which includes an array of coastal features, such as bays, inlets, and fjords, further increasing its length.

While other countries, such as Russia and Australia, have significant coastlines as well, none match Canada's total. Russia, for instance, has a lengthy coastline along the Arctic and Pacific Oceans, but its total is shorter than Canada's. Australia also has a long coastline due to its status as an island continent, but again, it does not surpass that of Canada. The United States has notable coastlines, particularly along the Pacific and Atlantic Oceans, but it is considerably shorter than that of Canada.