Turkmenistan
total: 3,736 km
border countries: Afghanistan 744 km, Iran 992 km, Kazakhstan 379
km, Uzbekistan 1,621 km
Turks and Caicos Islands
0 km
Tuvalu
0 km
Uganda
total: 2,698 km
border countries: Democratic Republic of the Congo 765 km, Kenya 933
km, Rwanda 169 km, Sudan 435 km, Tanzania 396 km
Ukraine
total: 4,663 km
border countries: Belarus 891 km, Hungary 103 km, Moldova 939 km,
Poland 526 km, Romania (south) 169 km, Romania (west) 362 km, Russia
1,576 km, Slovakia 97 km
United Arab Emirates
total: 867 km
border countries: Oman 410 km, Saudi Arabia 457 km
United Kingdom
total: 360 km
border countries: Ireland 360 km
United States
total: 12,034 km
border countries: Canada 8,893 km (including 2,477 km with Alaska),
Mexico 3,141 km
note: US Naval Base at Guantanamo Bay, Cuba is leased by the US and
thus remains part of Cuba; the base boundary is 29 km
Uruguay
total: 1,564 km
border countries: Argentina 579 km, Brazil 985 km
Uzbekistan
total: 6,221 km
border countries: Afghanistan 137 km, Kazakhstan 2,203 km,
Kyrgyzstan 1,099 km, Tajikistan 1,161 km, Turkmenistan 1,621 km