Portugal to Iran: the shortest border chain
You can get from Portugal to Iran crossing only land borders — the shortest chain passes through 6 countries.
Fewest countries
Shortest route by distance
Measured between country centers, the shortest chain covers about 5,890 km — and it takes a different path:
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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