| Border Cities / Towns | Countries | % Correct |
|---|---|---|
| San Diego / Tijuana | Mexico | 98%
|
| Singapore / Johor Bahru | Singapore | 98%
|
| San Diego / Tijuana | United States | 98%
|
| Singapore / Johor Bahru | Malaysia | 95%
|
| Gibraltar / La Línea de la Concepción | Spain | 95%
|
| Detroit / Windsor | Canada | 91%
|
| Basel / Saint Louis / Weil am Rhein | France | 91%
|
| Basel / Saint Louis / Weil am Rhein | Germany | 91%
|
| El Paso / Ciudad Juárez | Mexico | 91%
|
| Basel / Saint Louis / Weil am Rhein | Switzerland | 91%
|
| Gibraltar / La Línea de la Concepción | United Kingdom | 91%
|
| El Paso / Ciudad Juárez | United States | 91%
|
| Detroit / Windsor | United States | 91%
|
| Kinshasa / Brazzaville | Republic of Congo | 88%
|
| Niagara Falls, NY / Niagara Falls, ON | Canada | 84%
|
| Niagara Falls, NY / Niagara Falls, ON | United States | 84%
|
| Buffalo / Fort Erie | Canada | 79%
|
| Geneva / Annemasse | Switzerland | 79%
|
| Buffalo / Fort Erie | United States | 79%
|
| Kinshasa / Brazzaville | Democratic Republic of Congo | 74%
|
| Geneva / Annemasse | France | 74%
|
| Strasbourg / Kehl | France | 74%
|
| Strasbourg / Kehl | Germany | 74%
|
| N'Djamena / Kousséri | Chad | 72%
|
| Frankfurt an der Oder / Slubice | Germany | 72%
|
| Tashkent / Saryagash | Uzbekistan | 72%
|
| Mexicali / Calexico | Mexico | 70%
|
| Mexicali / Calexico | United States | 67%
|
| Eilat / Aqaba / Taba | Egypt | 65%
|
| Beausoleil / Montecarlo | France | 63%
|
| Eilat / Aqaba / Taba | Israel | 63%
|
| Tashkent / Saryagash | Kazakhstan | 63%
|
| Piedras Negras / Eagle Pass | Mexico | 63%
|
| Beausoleil / Montecarlo | Monaco | 63%
|
| Piedras Negras / Eagle Pass | United States | 63%
|
| Eilat / Aqaba / Taba | Jordan | 60%
|
| Narva / Ivangorod | Russia | 60%
|
| Como / Chiasso | Italy | 58%
|
| Brownsville / Matamorros | Mexico | 58%
|
| McAllen / Reynosa | Mexico | 58%
|
| Como / Chiasso | Switzerland | 58%
|
| Lomé / Aflao | Togo | 58%
|
| Brownsville / Matamorros | United States | 58%
|
| McAllen / Reynosa | United States | 58%
|
| Ciudad del Este / Foz do Iguaçu / Puerto Iguazú | Argentina | 56%
|
| Ciudad del Este / Foz do Iguaçu / Puerto Iguazú | Brazil | 56%
|
| N'Djamena / Kousséri | Cameroon | 56%
|
| Laredo / Nuevo Laredo | Mexico | 56%
|
| Ciudad del Este / Foz do Iguaçu / Puerto Iguazú | Paraguay | 56%
|
| Frankfurt an der Oder / Slubice | Poland | 56%
|
| Laredo / Nuevo Laredo | United States | 56%
|
| Roubaix-Tourcoing / Mouscron | France | 53%
|
| Blagoveshchensk / Heihe | Russia | 53%
|
| Ciudad Hidalgo / Ciudad Tecún Umán | Guatemala | 51%
|
| Ciudad Hidalgo / Ciudad Tecún Umán | Mexico | 51%
|
| Roubaix-Tourcoing / Mouscron | Belgium | 49%
|
| International Falls / Fort Frances | Canada | 49%
|
| Lomé / Aflao | Ghana | 49%
|
| International Falls / Fort Frances | United States | 49%
|
| Narva / Ivangorod | Estonia | 47%
|
| Melilla / Beni Ansar | Morocco | 44%
|
| Melilla / Beni Ansar | Spain | 44%
|
| Baarle-Nassau / Baarle-Hertog | Belgium | 40%
|
| Baarle-Nassau / Baarle-Hertog | Netherlands | 40%
|
| Blagoveshchensk / Heihe | China | 37%
|
| Rivera / Santa do Libramento | Brazil | 35%
|
| Rivera / Santa do Libramento | Uruguay | 33%
|
| Cúcuta / San Antonio de Táchira | Colombia | 28%
|
| Hendaye / Irún | France | 28%
|
| Goma / Gisenyi | Rwanda | 28%
|
| Hendaye / Irún | Spain | 28%
|
| Cúcuta / San Antonio de Táchira | Venezuela | 28%
|
| Goma / Gisenyi | Democratic Republic of Congo | 26%
|
| Herzogenrath / Kerkrade | Germany | 21%
|
| Herzogenrath / Kerkrade | Netherlands | 19%
|
| Ruse / Giurgiu | Romania | 19%
|
| Leticia / Tabatinga / Santa Rosa de Yavarí | Brazil | 16%
|
| Ruse / Giurgiu | Bulgaria | 16%
|
| Leticia / Tabatinga / Santa Rosa de Yavarí | Colombia | 16%
|
| Gorizia / Nova Gorica | Italy | 16%
|
| Leticia / Tabatinga / Santa Rosa de Yavarí | Perú | 16%
|
| Gorizia / Nova Gorica | Slovenia | 16%
|
| Ouanaminthe / Dajabón | Dominican Republic | 5%
|
| Ouanaminthe / Dajabón | Haiti | 5%
|