Rank State Length of Border with Canada
Alaska 2,475 km (1,538 mi)
michigan1,160 km (721 mi)
maine 983 km (611 mi)
minnesota880 km (547 mi)
montana 877 km (545 mi)
new-york 716 km (445 mi)
washington687 km (427 mi)
north dakota 499 km (310 mi)
ohio 235 km (146 mi)
vermont 145 km (90 mi)
new-hampshire 93 km (58 mi) 12
idaho 72 km (45 mi)
pennsylvania 68 km (42 mi)
Illinois
The country immediately south of Canada, which contains the Northwest Territories, is the United States. The border between Canada and the United States is the longest international land border in the world.
Canada shares a land border with both the US and Denmark. The next nearest neighbour is France. Canada's border with the US is known as the longest undefended border in the world. Canada also shares a land border with Denmark, although it is much shorter than that shared with the US. The international boundary runs through Hans Island. Saint-Pierre-et-Miquelon, French territory near Newfoundland's Burin Peninsula, is Canada's next nearest neighbour.
Ten U.S. states, Alaska, Washington, Idaho, Montana, North Dakota, Minnesota, New York, Vermont, New Hampshire and Maine, each share a land border with Canada.
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The countries with the longest land border are Canada and the United States. They share a border that is approximately 8,891 kilometers (5,525 miles) long.
The longest land border in the world is between Russia and Kazakhstan, stretching approximately 7,500 kilometers.
Mary land
USA and Canada - 8,893 km (including: 2,477 km with Alaska)
New South Wales has the longest land border, which is 4635 km long. it shars its border with Victoria to the south, South Australia to the west, and Queensland to the north.
russia is the closest country and it does not touch the border of the US!!! :)
The United States and Canada share the longest land border between two sovereign countries at 8,893 km (5,525 mi). This border, however, is discontinuous and includes the Alaska–Canada border.The longest continuous land border is between Kazakhstan and Russia at 6,846 km (4,254 mi).
Illinois
Alaska
North Dakota and Idaho share a land border with Canada. Pennsylvania does not share a land border with Canada. However Pennsylvania does share a maritime border with Canada across Lake Erie.
Sweden's longest land border is with Norway. Finland is the only other country with which Sweden has a land border, although only a narrow waterway separates Sweden from Denmark.
North Dakota and Idaho share a land border with Canada. Pennsylvania shares a maritime border with Canada across Lake Erie.