Mexico to Peru: the shortest border chain
You can get from Mexico to Peru crossing only land borders — the shortest chain passes through 6 countries.
Fewest countries
The fewest-countries route is also the shortest by distance: about 5,635 km measured between country centers.
The rules behind the route
These routes come from Bordlr's border graph: strict land borders plus three permanent fixed crossings (Øresund Bridge, King Fahd Causeway, Johor–Singapore Causeway). Ferry routes don’t count. Distances are great-circle measurements between country centers, so they rank routes fairly without pretending to be driving distances.
Bordlr is a free daily geography game: connect two regions through the lands that border them, in as few countries and as few kilometers as you can.
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