Bermuda:
103 km
Bhutan:
0 km (landlocked)
Bolivia:
0 km (landlocked)
Bosnia and Herzegovina:
20 km
Botswana:
0 km (landlocked)
Bouvet Island:
29.6 km
Brazil:
7,491 km
British Indian Ocean Territory:
698 km
British Virgin Islands:
80 km
Brunei:
161 km