Geography quiz
10 longest land boundaries in order
Ten buttons in A to Z order. Click the country with the longest land boundary first, then the next, down to number ten.
- Format
- Click the grid
- Items
- 10 to click
- Limit
- 2:00
- Level
- Hard
- Checked
- 2026.10.03
- Targets
- 10
- Time limit
- 2:00
- Minefield
- One wrong click ends it
- Work out what comes next and click it.
- The full order is shown when the game ends.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
Click the countries from the longest land boundary to the shortest. The grid appears when you start.
About this quiz
The ten countries whose land boundaries with their neighbours add up to the most kilometres.
- First place has 22,457 km; tenth has 8,082 km.
- Just outside the ten: Mali, 7,908 km.
- After the game every button shows its place in the order.
Sources
- [1]Central Intelligence Agency. The World Factbook, 2025 edition: Land boundaries (archived copy of the agency's page).
- [2]United Nations. Member States.
- [3]United Nations. Non-member States.
Note on the data. Land borders, land boundary lengths, coastlines and highest points are those of the CIA World Factbook in its last (2025) edition, read on 3 October 2026 from the archived copies of the agency's own field pages, parsed by script and checked to be symmetric. A border through a dependency (French Guiana, Gibraltar, Greenland, Ceuta and Melilla) or one that depends on a disputed status (Kosovo, Palestine, Western Sahara, the Golan Heights) is on a doubtful list and is never asked. The order was computed from the Land boundaries (total) field for Ribbia's 197 countries.
Last checked October 3, 2026
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