What is the longest border between any countries?

MandyL

The world's longest border belongs to Russia. Of Russia's 57,000+ kilometers of border 20,139 of it border 14 different countries; North Korea, China, Mongolia, Kazakhstan, Azerbaijan, Georgia, Ukraine, Belarus, Latvia, Estonia, Finland, Norway, Lithuania, Poland. If it wasn't for the 86 kilometers of the Bering Strait Russia would also border the United States. The world's longest shared border is that of Canada and the United States. Known as the International Boundary, it has a length of 8,893 kilometers and is also known as the world's longest undefended border. http://thelongestlistofthelongeststuffatthelongestdomainnameatlonglast.com/long263.html Feb 15 07, 2:02 PM

skysmom65

Canada and the United States of America share the longest common border, officially known as the International Boundary, between any two countries that is not militarized or actively patrolled. The terrestrial boundary (including small portions of maritime boundaries on the Atlantic, Pacific, and Arctic coasts as well as the Great Lakes) is 8,891 kilometres (5,522 mi) long, including 2,477 kilometres (1,539 mi) shared with Alaska.http://www.answers.com/topic/canada-united-states-border Feb 15 07, 5:55 PM

author

The longest continuous border is Kazakhstan/Russia, 6846 km. The continuous USA/Canada border is 6416 km including the Great Lakes. In addition to this comes the Alaska/Canada border, 2547 km. Feb 15 07, 7:15 PM