| Border Length (km) | Border w/ | Country | % Correct |
|---|---|---|---|
| 5,300 km | Chile | Argentina | 100%
|
| 4,053 km | India | Bangladesh | 100%
|
| 3,400 km | Brazil | Bolivia | 100%
|
| 3,400 km | Bolivia | Brazil | 100%
|
| 8,893 km | United States | Canada | 100%
|
| 5,300 km | Argentina | Chile | 100%
|
| 4,677 km | Mongolia | China | 100%
|
| 4,053 km | Bangladesh | India | 100%
|
| 6,846 km | Russia | Kazakhstan | 100%
|
| 3,141 km | United States | Mexico | 100%
|
| 4,677 km | China | Mongolia | 100%
|
| 2,912 km | India | Pakistan | 100%
|
| 6,846 km | Kazakhstan | Russia | 100%
|
| 8,893 km | Canada | United States | 100%
|
| 2,511 km | Angola | Democratic Republic of the Congo | 92%
|
| 2,430 km | Pakistan | Afghanistan | 83%
|
| 2,511 km | Democratic Republic of the Congo | Angola | 83%
|
| 2,237 km | Mauritania | Mali | 83%
|
| 2,237 km | Mali | Mauritania | 83%
|
| 2,200 km | Brazil | Venezuela | 83%
|
| 2,130 km | Vietnam | Laos | 75%
|
| 2,410 km | Democratic Republic of the Congo | Republic of the Congo | 75%
|
| 2,203 km | Kazakhstan | Uzbekistan | 75%
|
| 2,130 km | Laos | Vietnam | 75%
|
| 282 km | Greece | Albania | 67%
|
| 1,601 km | Morocco | Algeria | 67%
|
| 64 km | Spain | Andorra | 67%
|
| 787 km | Azerbaijan | Armenia | 67%
|
| 787 km | Armenia | Azerbaijan | 67%
|
| 620 km | France | Belgium | 67%
|
| 266 km | Guatemala | Belize | 67%
|
| 605 km | India | Bhutan | 67%
|
| 932 km | Croatia | Bosnia and Herzegovina | 67%
|
| 1,840 km | South Africa | Botswana | 67%
|
| 381 km | Malaysia | Brunei | 67%
|
| 608 km | Romania | Bulgaria | 67%
|
| 451 km | Tanzania | Burundi | 67%
|
| 1,690 km | Nigeria | Cameroon | 67%
|
| 330 km | Panama | Costa Rica | 67%
|
| 932 km | Bosnia and Herzegovina | Croatia | 67%
|
| 815 km | Germany | Czech Republic | 67%
|
| 68 km | Germany | Denmark | 67%
|
| 342 km | Ethiopia | Djibouti | 67%
|
| 360 km | Haiti | Dominican Republic | 67%
|
| 228 km | Indonesia | East Timor | 67%
|
| 342 km | Honduras | El Salvador | 67%
|
| 350 km | Gabon | Equatorial Guinea | 67%
|
| 912 km | Ethiopia | Eritrea | 67%
|
| 339 km | Latvia | Estonia | 67%
|
| 430 km | South Africa | Eswatini | 67%
|
| 1,600 km | Somalia | Ethiopia | 67%
|
| 1,903 km | Republic of the Congo | Gabon | 67%
|
| 815 km | Czech Republic | Germany | 67%
|
| 877 km | Togo | Ghana | 67%
|
| 494 km | Bulgaria | Greece | 67%
|
| 858 km | Mali | Guinea | 67%
|
| 386 km | Guinea | Guinea Bissau | 67%
|
| 360 km | Dominican Republic | Haiti | 67%
|
| 922 km | Nicaragua | Honduras | 67%
|
| 677 km | Slovakia | Hungary | 67%
|
| 1,782 km | Malaysia | Indonesia | 67%
|
| 1,458 km | Iraq | Iran | 67%
|
| 1,458 km | Iran | Iraq | 67%
|
| 499 km | United Kingdom | Ireland | 67%
|
| 266 km | Egypt | Israel | 67%
|
| 740 km | Switzerland | Italy | 67%
|
| 716 km | Liberia | Ivory Coast | 67%
|
| 933 km | Uganda | Kenya | 67%
|
| 352 km | Serbia | Kosovo | 67%
|
| 240 km | Iraq | Kuwait | 67%
|
| 453 km | Lithuania | Latvia | 67%
|
| 375 km | Syria | Lebanon | 67%
|
| 909 km | South Africa | Lesotho | 67%
|
| 716 km | Ivory Coast | Liberia | 67%
|
| 41 km | Switzerland | Liechtenstein | 67%
|
| 502 km | Belarus | Lithuania | 67%
|
| 148 km | Belgium | Luxembourg | 67%
|
| 1,569 km | Mozambique | Malawi | 67%
|
| 1,782 km | Indonesia | Malaysia | 67%
|
| 4.4 km | France | Monaco | 67%
|
| 225 km | Bosnia and Herzegovina | Montenegro | 67%
|
| 1,601 km | Algeria | Morocco | 67%
|
| 1,569 km | Malawi | Mozambique | 67%
|
| 1,690 km | India | Nepal | 67%
|
| 577 km | Germany | Netherlands | 67%
|
| 922 km | Honduras | Nicaragua | 67%
|
| 1,690 km | Cameroon | Nigeria | 67%
|
| 246 km | Greece | North Macedonia | 67%
|
| 1,619 km | Sweden | Norway | 67%
|
| 330 km | Costa Rica | Panama | 67%
|
| 820 km | Indonesia | Papua New Guinea | 67%
|
| 1,880 km | Argentina | Paraguay | 67%
|
| 1,214 km | Spain | Portugal | 67%
|
| 60 km | Saudi Arabia | Qatar | 67%
|
| 608 km | Bulgaria | Romania | 67%
|
| 290 km | Burundi | Rwanda | 67%
|
| 39 km | Italy | San Marino | 67%
|
| 1,458 km | Yemen | Saudi Arabia | 67%
|
| 813 km | Mauritania | Senegal | 67%
|
| 652 km | Guinea | Sierra Leone | 67%
|
| 677 km | Hungary | Slovakia | 67%
|
| 1,600 km | Ethiopia | Somalia | 67%
|
| 1,840 km | Botswana | South Africa | 67%
|
| 238 km | North Korea | South Korea | 67%
|
| 1,937 km | Sudan | South Sudan | 67%
|
| 1,214 km | Portugal | Spain | 67%
|
| 1,937 km | South Sudan | Sudan | 67%
|
| 600 km | Guyana | Suriname | 67%
|
| 1,619 km | Norway | Sweden | 67%
|
| 740 km | Italy | Switzerland | 67%
|
| 822 km | Turkey | Syria | 67%
|
| 1,800 km | Myanmar | Thailand | 67%
|
| 877 km | Ghana | Togo | 67%
|
| 822 km | Syria | Turkey | 67%
|
| 1,621 km | Uzbekistan | Turkmenistan | 67%
|
| 933 km | Kenya | Uganda | 67%
|
| 457 km | Saudi Arabia | United Arab Emirates | 67%
|
| 499 km | Ireland | United Kingdom | 67%
|
| 3.2 km | Italy | Vatican City | 67%
|
| 1,458 km | Saudi Arabia | Yemen | 67%
|
| 1,930 km | Democratic Republic of the Congo | Zambia | 67%
|
| 784 km | Germany | Austria | 58%
|
| 959 km | Russia | Belarus | 58%
|
| 773 km | Nigeria | Benin | 58%
|
| 1,000 km | Mali | Burkina Faso | 58%
|
| 1,228 km | Vietnam | Cambodia | 58%
|
| 1,577 km | Democratic Republic of the Congo | Central African Republic | 58%
|
| 1,360 km | Sudan | Chad | 58%
|
| 2,050 km | Venezuela | Colombia | 58%
|
| 152 km | United Kingdom | Cyprus | 58%
|
| 1,420 km | Peru | Ecuador | 58%
|
| 1,340 km | Russia | Finland | 58%
|
| 673 km | Brazil | France | 58%
|
| 740 km | Senegal | Gambia | 58%
|
| 937 km | Russia | Georgia | 58%
|
| 962 km | Mexico | Guatemala | 58%
|
| 1,119 km | Brazil | Guyana | 58%
|
| 744 km | Saudi Arabia | Jordan | 58%
|
| 1,099 km | Uzbekistan | Kyrgyzstan | 58%
|
| 1,115 km | Egypt | Libya | 58%
|
| 939 km | Ukraine | Moldova | 58%
|
| 2,185 km | China | Myanmar | 58%
|
| 1,376 km | Angola | Namibia | 58%
|
| 1,497 km | Nigeria | Niger | 58%
|
| 1,416 km | China | North Korea | 58%
|
| 676 km | Saudi Arabia | Oman | 58%
|
| 1,560 km | Brazil | Peru | 58%
|
| 658 km | Czech Republic | Poland | 58%
|
| 670 km | Croatia | Slovenia | 58%
|
| 1,206 km | Afghanistan | Tajikistan | 58%
|
| 769 km | Kenya | Tanzania | 58%
|
| 1,010 km | Algeria | Tunisia | 58%
|
| 1,576 km | Russia | Ukraine | 58%
|
| 985 km | Brazil | Uruguay | 58%
|
| 1,231 km | Mozambique | Zimbabwe | 58%
|