| Country | Longest Bordering Country | % Correct |
|---|---|---|
| Belarus | China | Finland | +3 others | Russia | 98%
|
| Bolivia | France | Guyana | +3 others | Brazil | 97%
|
| Ireland | United Kingdom | 96%
|
| Canada | Mexico | United States | 96%
|
| Mongolia | Myanmar | North Korea | China | 95%
|
| Austria | Czech Republic | Denmark | Netherlands | Germany | 95%
|
| Bangladesh | Bhutan | Nepal | +2 others | India | 95%
|
| Andorra | Portugal | Spain | 95%
|
| Chile | Paraguay | Argentina | 94%
|
| United States | Canada | 93%
|
| Iraq | Iran | 93%
|
| Argentina | Chile | 92%
|
| Jordan | Oman | Qatar | +2 others | Saudi Arabia | 92%
|
| Chad | Egypt | South Sudan | Sudan | 92%
|
| Burkina Faso | Guinea | Mauritania | Mali | 91%
|
| Afghanistan | Pakistan | 91%
|
| Norway | Sweden | 91%
|
| Syria | Turkey | 91%
|
| Morocco | Tunisia | Algeria | 89%
|
| Russia | Kazakhstan | 89%
|
| Colombia | Venezuela | 89%
|
| Angola | Central African Republic | Rep. of the Congo | Zambia | Democratic Republic of the Congo | 88%
|
| Libya | Egypt | 88%
|
| Belgium | Monaco | France | 88%
|
| San Marino | Switzerland | Vatican City | Italy | 88%
|
| Sweden | Norway | 88%
|
| Ecuador | Peru | 87%
|
| Iran | Kuwait | Iraq | 86%
|
| United Kingdom | Ireland | 85%
|
| Benin | Cameroon | Niger | Nigeria | 85%
|
| East Timor | Malaysia | Papua New Guinea | Indonesia | 84%
|
| Lebanon | Turkey | Syria | 84%
|
| Brazil | Bolivia | 83%
|
| Spain | Portugal | 83%
|
| Bulgaria | Serbia | Romania | 83%
|
| Algeria | Morocco | 82%
|
| Moldova | Ukraine | 82%
|
| Djibouti | Eritrea | Somalia | Ethiopia | 81%
|
| Brunei | Indonesia | Malaysia | 81%
|
| Botswana | Eswatini | Lesotho | South Africa | 80%
|
| Cambodia | Laos | Vietnam | 80%
|
| Albania | North Macedonia | Greece | 79%
|
| Thailand | Myanmar | 79%
|
| Kyrgyzstan | Turkmenistan | Uzbekistan | 79%
|
| Germany | Poland | Czechia | 78%
|
| El Salvador | Nicaragua | Honduras | 78%
|
| Tanzania | Uganda | Kenya | 78%
|
| Ethiopia | Somalia | 78%
|
| India | Bangladesh | 77%
|
| Greece | Romania | Bulgaria | 77%
|
| Dominican Republic | Haiti | 77%
|
| Slovakia | Hungary | 77%
|
| Vietnam | Laos | 77%
|
| Costa Rica | Panama | 77%
|
| Kosovo | Montenegro | Serbia | 77%
|
| Italy | Liechtenstein | Switzerland | 77%
|
| Burundi | Tanzania | 77%
|
| Saudi Arabia | Yemen | 77%
|
| Haiti | Dominican Republic | 76%
|
| Malawi | Zimbabwe | Mozambique | 76%
|
| Gabon | Republic of the Congo | 76%
|
| D. R. Congo | Namibia | Angola | 75%
|
| Bosnia and Herzegovina | Slovenia | Croatia | 75%
|
| Estonia | Latvia | 75%
|
| Guatemala | Mexico | 75%
|
| Sudan | South Sudan | 75%
|
| Uzbekistan | Turkmenistan | 75%
|
| Mali | Senegal | Mauritania | 74%
|
| Hungary | Slovakia | 74%
|
| Croatia | Bosnia and Herzegovina | 73%
|
| Lithuania | Belarus | 72%
|
| Suriname | Guyana | 72%
|
| Honduras | Nicaragua | 72%
|
| Nigeria | Cameroon | 71%
|
| Belize | Guatemala | 71%
|
| Latvia | Lithuania | 70%
|
| South Africa | Botswana | 69%
|
| Panama | Costa Rica | 69%
|
| Tajikistan | Afghanistan | 68%
|
| Azerbaijan | Armenia | 68%
|
| South Korea | North Korea | 68%
|
| Togo | Ghana | 67%
|
| Armenia | Azerbaijan | 65%
|
| Kenya | Uganda | 61%
|
| Guinea-Bissau | Sierra Leone | Guinea | 60%
|
| Liberia | Ivory Coast | 58%
|
| Ghana | Togo | 57%
|
| Ivory Coast | Liberia | 56%
|
| Mozambique | Malawi | 55%
|
| Israel | Jordan | 53%
|
| Equatorial Guinea | Gabon | 52%
|
| Gambia | Senegal | 49%
|
| Rwanda | Burundi | 47%
|
| Luxembourg | Belgium | 46%
|