World Record Title: The world's longest undefended borders: The borders of the United States and Canada
World Record Creator: The borders of the United States and Canada
World Record Holder: The borders of the United States and Canada
World Record Field: The world's longest undefended border
World Record Rules: The world's longest undefended border
World Record Number: 20120500031
World Record Validity Period: Until the world record was broken.
World Record Witness: Carrying the Flag World Records certifier 006
World Records Source: World record database of Carrying the Flag
Awarding Certificate Date: May 25, 2012
World Record Details:

      The world's longest undefended border: U.S. and Canadian borders. Length more than 6000 kilometers.