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- Canada-United States Border: Length – 8,891 kilometers (5,525 miles)
- Russia-Kazakhstan Border: Length – 7,644 kilometers (4,750 miles)
- China-Russia Border: Length – 4,209 kilometers (2,615 miles)
- Russia-Mongolia Border: Length – 3,452 kilometers (2,144 miles)
- Argentina-Chile Border: Length – 5,308 kilometers (3,293 miles)
- China-Kazakhstan Border: Length – 1,782 kilometers (1,107 miles)
- Bolivia-Chile Border: Length – 861 kilometers (535 miles)
- Norway-Sweden Border: Length – 1,630 kilometers (1,013 miles)
- China-Mongolia Border: Length – 4,677 kilometers (2,905 miles)
- Finland-Russia Border: Length – 1,309 kilometers (814 miles)
- Brazil-Argentina Border: Length – 1,224 kilometers (761 miles)
- Brazil-Bolivia Border: Length – 3,126 kilometers (1,942 miles)
- Brazil-Paraguay Border: Length – 1,365 kilometers (848 miles)
- Brazil-Uruguay Border: Length – 1,003 kilometers (623 miles)
- China-North Korea Border: Length – 1,416 kilometers (880 miles)
- Poland-Germany Border: Length – 467 kilometers (290 miles)
- India-Bangladesh Border: Length – 4,096 kilometers (2,545 miles)
- Mexico-United States Border: Length – 3,145 kilometers (1,954 miles)
- Spain-Portugal Border: Length – 1,214 kilometers (754 miles)
- Iran-Afghanistan Border: Length – 921 kilometers (572 miles)
- China-Afghanistan Border: Length – 91 kilometers (57 miles)
- Thailand-Myanmar Border: Length – 2,416 kilometers (1,501 miles)
- India-Nepal Border: Length – 1,758 kilometers (1,092 miles)
- Egypt-Israel Border: Length – 266 kilometers (165 miles)
- Turkey-Iran Border: Length – 499 kilometers (310 miles)
- Germany-Austria Border: Length – 784 kilometers (487 miles)
- Germany-Czech Republic Border: Length – 815 kilometers (506 miles)
- Germany-Netherlands Border: Length – 575 kilometers (357 miles)
- Germany-Poland Border: Length – 467 kilometers (290 miles)
- Germany-France Border: Length – 451 kilometers (280 miles)
- France-Italy Border: Length – 515 kilometers (320 miles)
- France-Spain Border: Length – 623 kilometers (387 miles)
- France-Belgium Border: Length – 620 kilometers (385 miles)
- France-Germany Border: Length – 451 kilometers (280 miles)
- France-Switzerland Border: Length – 573 kilometers (356 miles)
- France-Luxembourg Border: Length – 73 kilometers (45 miles)
- Belgium-Netherlands Border: Length – 450 kilometers (280 miles)
- Belgium-Luxembourg Border: Length – 148 kilometers (92 miles)
- Belgium-Germany Border: Length – 167 kilometers (104 miles)
- Luxembourg-Germany Border: Length – 138 kilometers (86 miles)
- Luxembourg-Belgium Border: Length – 148 kilometers (92 miles)
- Switzerland-Austria Border: Length – 164 kilometers (102 miles)
- Switzerland-Liechtenstein Border: Length – 41 kilometers (25 miles)
- Switzerland-France Border: Length – 573 kilometers (356 miles)
- Switzerland-Italy Border: Length – 734 kilometers (456 miles)
- Switzerland-Germany Border: Length – 334 kilometers (208 miles)
- Switzerland-Slovenia Border: Length – 163 kilometers (101 miles)
- Slovenia-Italy Border: Length – 232 kilometers (144 miles)
- Slovenia-Croatia Border: Length – 670 kilometers (416 miles)
- Croatia-Bosnia and Herzegovina Border: Length – 956 kilometers (594 miles)
