border countries: Guinea 652 km, Liberia 306 km

Singapore:
0 km

Slovakia:
total: 1,355 km

border countries: Austria 91 km, Czech Republic 215 km, Hungary 515
km, Poland 444 km, Ukraine 90 km

Slovenia:
total: 1,165 km

border countries: Austria 330 km, Croatia 501 km, Italy 232 km,
Hungary 102 km

Solomon Islands:
0 km

Somalia:
total: 2,366 km

border countries: Djibouti 58 km, Ethiopia 1,626 km, Kenya 682 km

South Africa:
total: 4,750 km

border countries: Botswana 1,840 km, Lesotho 909 km, Mozambique 491
km, Namibia 855 km, Swaziland 430 km, Zimbabwe 225 km

South Georgia and the South Sandwich Islands:
0 km

Spain:
total: 1,917.8 km

border countries: Andorra 63.7 km, France 623 km, Gibraltar 1.2 km,
Portugal 1,214 km, Morocco (Ceuta) 6.3 km, Morocco (Melilla) 9.6 km

Spratly Islands:
0 km

Sri Lanka:
0 km

Sudan:
total: 7,687 km

border countries: Central African Republic 1,165 km, Chad 1,360 km,
Democratic Republic of the Congo 628 km, Egypt 1,273 km, Eritrea 605
km, Ethiopia 1,606 km, Kenya 232 km, Libya 383 km, Uganda 435 km

Suriname:
total: 1,707 km

border countries: Brazil 597 km, French Guiana 510 km, Guyana 600 km

Svalbard:
0 km

Swaziland:
total: 535 km

border countries: Mozambique 105 km, South Africa 430 km

Sweden:
total: 2,205 km

border countries: Finland 586 km, Norway 1,619 km

Switzerland:
total: 1,852 km

border countries: Austria 164 km, France 573 km, Italy 740 km,
Liechtenstein 41 km, Germany 334 km

Syria:
total: 2,253 km

border countries: Iraq 605 km, Israel 76 km, Jordan 375 km, Lebanon
375 km, Turkey 822 km

Tajikistan:
total: 3,651 km

border countries: Afghanistan 1,206 km, China 414 km, Kyrgyzstan
870 km, Uzbekistan 1,161 km

Tanzania:
total: 3,402 km

border countries: Burundi 451 km, Kenya 769 km, Malawi 475 km,
Mozambique 756 km, Rwanda 217 km, Uganda 396 km, Zambia 338 km

Thailand:
total: 4,863 km

border countries: Burma 1,800 km, Cambodia 803 km, Laos 1,754 km,
Malaysia 506 km

Togo:
total: 1,647 km

border countries: Benin 644 km, Burkina Faso 126 km, Ghana 877 km

Tokelau:
0 km

Tonga:
0 km

Trinidad and Tobago:
0 km

Tromelin Island:
0 km

Tunisia:
total: 1,424 km

border countries: Algeria 965 km, Libya 459 km

Turkey:
total: 2,627 km