| Border | Country |
| Start at Canada [U]? | |
| USA [M]? | |
| Mexico [B]? | |
| Belize [G]? | |
| Guatemala [E]? | |
| El Salvador [H]? | |
| Honduras [N]? | |
| Nicaragua [C]? | |
| Costa Rica [P]? | |
| Panama [C]? | |
| Colombia [V]? | |
| Venezuela [G]? | |
| Guyana [S]? | |
| Suriname [F]? | |
| France [A]? | |
| Andorra [S]? | |
| Spain [M]? | |
| Morocco [A]? | |
| Algeria [T]? | |
| | Border | Country |
| Tunisia [L]? | |
| Libya [E]? | |
| Egypt [I]? | |
| Israel [J]? | |
| Jordan [I]? | |
| Iraq [I]? | |
| Iran [A]? | |
| Afghanistan [T]? | |
| Turkmenistan or Tajikistan [U]? | |
| Uzbekistan [K]? | |
| Kazakhstan or Kyrgyzstan [C]? | |
| China [V]? | |
| Vietnam [L]? | |
| Laos [C]? | |
| Cambodia [T]? | |
| Thailand [M]? | |
| Malaysia [I]? | |
| Indonesia [P]? | |
| Start at Canada [U] | |
| Mexico [B] | |
| Belize [G] | |
| El Salvador [H] | |
| Nicaragua [C] | |
| Panama [C] | |
| France [A] | |
| Andorra [S] | |
| Spain [M] | |
| Morocco [A] | |
| Algeria [T] | |
| Tunisia [L] | |
| Libya [E] | |
| Egypt [I] | |
| Israel [J] | |
| Jordan [I] | |
| Iraq [I] | |
| Afghanistan [T] | |
| Turkmenistan or Tajikistan [U] | |
| Uzbekistan [K] | |
| Kazakhstan or Kyrgyzstan [C] | |
| Vietnam [L] | |
| Laos [C] | |
| Cambodia [T] | |
| Thailand [M] | |
| Malaysia [I] | |
| Indonesia [P] | |
|