I totally blew my first answer. Hungary once bordered the former USSR but now borders the Ukraine. I believe the correct answer is North Korea and Poland. The distance between them is 7672 km or 4767 miles. They share a border with Russia. Poland borders the Russian semi-exclave of Kaliningrad Oblast. https://www.distancefromto.net/distance-from-north-korea-to-poland
Of course, Wellenbrecher! Despite being well aware that Brazil has the longest border with France, it failed to cross my mind when I asked this.
May 13 2021, 10:07 PM
wellenbrecher
Answer has 1 vote
wellenbrecher 20 year member
712 replies
Answer has 1 vote.
gmackematix, I admit that my answer is a sort of academic and does not really reflect the idea of your question.
But how about this: Since France and Netherlands have a common border in the Caribbean (St. Martin/Sint Maarten), the correct answer to your question could technically be: Brazil - The Netherlands.