- If you consider just the mainland. Well, the longest border is with Spain (620 kms)- If you consider France with overseas departements, it is Brazil with 730 kms (border with French Guyane)- If you consider French territories, It is Australia with an 8000 kms border in Antartica.
Canada has the longest border in the world, measuring about 8,891 kilometers (5,525 miles) long, shared with the United States.
California has the longest border with Nevada.
Mississippi has the longest border with Alabama.
Africa has the longest land border of any continent. It is surrounded by the Atlantic Ocean to the west, the Indian Ocean to the southeast, and the Mediterranean Sea to the north.
Libya has longest border on Mediterranean
India has the longest border with the Arabian Sea.
The Tajo Rivr is the longest river in Spain
Sweden shares its longest border with Norway, which is located to the West of the country. This border is 2542 miles long. Its Eastern border is shared with Finland and is much shorter, about 1/3 that length.
At 8891 km, the border between Canada and the USA is the longest between any two countries, but a major section of that border (with Alaska) is not contiguous with the rest. The longest contiguous section of border between two countries in the world is between Russia and Kazakhstan, at 6846 km.
No, Ontario has the longest border with Canada and the US.
Pakistan has the longest border with Afghanistan. It stretches for over 1500km.