Bhutan
total: 1,075 km
border countries: China 470 km, India 605 km
Bolivia
total: 6,743 km
border countries: Argentina 832 km, Brazil 3,400 km, Chile 861 km,
Paraguay 750 km, Peru 900 km
Bosnia and Herzegovina
total: 1,459 km
border countries: Croatia 932 km, Serbia and Montenegro 527 km
Botswana
total: 4,013 km
border countries: Namibia 1,360 km, South Africa 1,840 km, Zimbabwe
813 km
Bouvet Island
0 km
Brazil
total: 14,691 km
border countries: Argentina 1,224 km, Bolivia 3,400 km, Colombia
1,643 km, French Guiana 673 km, Guyana 1,119 km, Paraguay 1,290 km,
Peru 1,560 km, Suriname 597 km, Uruguay 985 km, Venezuela 2,200 km
British Indian Ocean Territory
0 km
British Virgin Islands
0 km
Brunei
total: 381 km
border countries: Malaysia 381 km
Bulgaria
total: 1,808 km
border countries: Greece 494 km, Macedonia 148 km, Romania 608 km,
Serbia and Montenegro 318 km, Turkey 240 km