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Countries by Longest International Border

Name the longest international border (border between 2 different countries) of every country in the world.
Not total border length, just the longest shared border
Data from Wikipedia
Lengths may be off due to data including non-recognized countries
Quiz by styxx
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Last updated: May 9, 2022
First submittedMay 5, 2022
Times taken12
Average score64.5%
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Border Length (km)
Border w/
Country
8,893 km
United States
Canada
8,893 km
Canada
United States
6,846 km
Russia
Kazakhstan
6,846 km
Kazakhstan
Russia
5,300 km
Chile
Argentina
5,300 km
Argentina
Chile
4,677 km
Mongolia
China
4,677 km
China
Mongolia
4,053 km
India
Bangladesh
4,053 km
Bangladesh
India
3,400 km
Brazil
Bolivia
3,400 km
Bolivia
Brazil
3,141 km
United States
Mexico
2,912 km
India
Pakistan
2,511 km
Democratic Republic of the Congo
Angola
2,511 km
Angola
Democratic Republic of the Congo
2,430 km
Pakistan
Afghanistan
2,410 km
Democratic Republic of the Congo
Republic of the Congo
2,237 km
Mauritania
Mali
2,237 km
Mali
Mauritania
2,203 km
Kazakhstan
Uzbekistan
2,200 km
Brazil
Venezuela
2,185 km
China
Myanmar
2,130 km
Vietnam
Laos
2,130 km
Laos
Vietnam
2,050 km
Venezuela
Colombia
1,937 km
Sudan
South Sudan
1,937 km
South Sudan
Sudan
1,930 km
Democratic Republic of the Congo
Zambia
1,903 km
Republic of the Congo
Gabon
1,880 km
Argentina
Paraguay
1,840 km
South Africa
Botswana
1,840 km
Botswana
South Africa
1,800 km
Myanmar
Thailand
1,782 km
Malaysia
Indonesia
1,782 km
Indonesia
Malaysia
1,690 km
Nigeria
Cameroon
1,690 km
India
Nepal
1,690 km
Cameroon
Nigeria
1,621 km
Uzbekistan
Turkmenistan
1,619 km
Sweden
Norway
1,619 km
Norway
Sweden
1,601 km
Morocco
Algeria
1,601 km
Algeria
Morocco
1,600 km
Somalia
Ethiopia
1,600 km
Ethiopia
Somalia
1,577 km
Democratic Republic of the Congo
Central African Republic
1,576 km
Russia
Ukraine
1,569 km
Mozambique
Malawi
1,569 km
Malawi
Mozambique
1,560 km
Brazil
Peru
1,497 km
Nigeria
Niger
1,458 km
Iraq
Iran
1,458 km
Iran
Iraq
1,458 km
Yemen
Saudi Arabia
1,458 km
Saudi Arabia
Yemen
1,420 km
Peru
Ecuador
1,416 km
China
North Korea
1,376 km
Angola
Namibia
1,360 km
Sudan
Chad
1,340 km
Russia
Finland
1,231 km
Mozambique
Zimbabwe
1,228 km
Vietnam
Cambodia
1,214 km
Spain
Portugal
1,214 km
Portugal
Spain
1,206 km
Afghanistan
Tajikistan
1,119 km
Brazil
Guyana
1,115 km
Egypt
Libya
1,099 km
Uzbekistan
Kyrgyzstan
1,010 km
Algeria
Tunisia
1,000 km
Mali
Burkina Faso
985 km
Brazil
Uruguay
962 km
Mexico
Guatemala
959 km
Russia
Belarus
939 km
Ukraine
Moldova
937 km
Russia
Georgia
933 km
Uganda
Kenya
933 km
Kenya
Uganda
Border Length (km)
Border w/
Country
932 km
Croatia
Bosnia and Herzegovina
932 km
Bosnia and Herzegovina
Croatia
922 km
Nicaragua
Honduras
922 km
Honduras
Nicaragua
912 km
Ethiopia
Eritrea
909 km
South Africa
Lesotho
877 km
Togo
Ghana
877 km
Ghana
Togo
858 km
Mali
Guinea
822 km
Turkey
Syria
822 km
Syria
Turkey
820 km
Indonesia
Papua New Guinea
815 km
Germany
Czech Republic
815 km
Czech Republic
Germany
813 km
Mauritania
Senegal
787 km
Azerbaijan
Armenia
787 km
Armenia
Azerbaijan
784 km
Germany
Austria
773 km
Nigeria
Benin
769 km
Kenya
Tanzania
744 km
Saudi Arabia
Jordan
740 km
Senegal
Gambia
740 km
Switzerland
Italy
740 km
Italy
Switzerland
716 km
Liberia
Ivory Coast
716 km
Ivory Coast
Liberia
677 km
Slovakia
Hungary
677 km
Hungary
Slovakia
676 km
Saudi Arabia
Oman
673 km
Brazil
France
670 km
Croatia
Slovenia
658 km
Czech Republic
Poland
652 km
Guinea
Sierra Leone
620 km
France
Belgium
608 km
Romania
Bulgaria
608 km
Bulgaria
Romania
605 km
India
Bhutan
600 km
Guyana
Suriname
577 km
Germany
Netherlands
502 km
Belarus
Lithuania
499 km
United Kingdom
Ireland
499 km
Ireland
United Kingdom
494 km
Bulgaria
Greece
457 km
Saudi Arabia
United Arab Emirates
453 km
Lithuania
Latvia
451 km
Tanzania
Burundi
430 km
South Africa
Eswatini
386 km
Guinea
Guinea Bissau
381 km
Malaysia
Brunei
375 km
Syria
Lebanon
360 km
Haiti
Dominican Republic
360 km
Dominican Republic
Haiti
352 km
Serbia
Kosovo
350 km
Gabon
Equatorial Guinea
342 km
Ethiopia
Djibouti
342 km
Honduras
El Salvador
339 km
Latvia
Estonia
330 km
Panama
Costa Rica
330 km
Costa Rica
Panama
290 km
Burundi
Rwanda
282 km
Greece
Albania
266 km
Guatemala
Belize
266 km
Egypt
Israel
246 km
Greece
North Macedonia
240 km
Iraq
Kuwait
238 km
North Korea
South Korea
228 km
Indonesia
East Timor
225 km
Bosnia and Herzegovina
Montenegro
152 km
United Kingdom
Cyprus
148 km
Belgium
Luxembourg
68 km
Germany
Denmark
64 km
Spain
Andorra
60 km
Saudi Arabia
Qatar
41 km
Switzerland
Liechtenstein
39 km
Italy
San Marino
4.4 km
France
Monaco
3.2 km
Italy
Vatican City
+1
Level 55
May 8, 2022
Nice format. I made a version with a map a while back.