Original: Borders Afghanistan has a total of 5,529 km of borders , including the land area borders , with the longest being the 2,430 border with Pakistan ( the Durand Line ) to the south and southeast , followed by a 936 km border with Iran to the west .
Simplified: Borders Afghanistan has a total of 5529 km of borders - the longest part of the border ( 2,430 km ) is known as the Durand Line and forms Afghanistan border with Pakistan .