border countries (5): Bolivia 942 km, Brazil 1263 km, Chile 6691 km, Paraguay 2531 km, Uruguay 541 km
Definition: This entry contains the total length of all land boundaries and the individual lengths for each of the contiguous border countries. When available, official lengths published by national statistical agencies are used. Because surveying methods may differ, country border lengths reported by contiguous countries may differ.
Source: CIA World Factbook - This page was last updated on Saturday, September 18, 2021
