Colombia:
total: 6,004 km
border countries: Brazil 1,643 km, Ecuador 590 km, Panama 225 km,
Peru 1,496 km (est.), Venezuela 2,050 km
Comoros:
0 km
Congo, Democratic Republic of the:
total: 10,744 km
border countries: Angola 2,511 km, Burundi 233 km, Central African
Republic 1,577 km, Republic of the Congo 2,410 km, Rwanda 217 km,
Sudan 628 km, Tanzania 473 km, Uganda 765 km, Zambia 1,930 km
Congo, Republic of the:
total: 5,504 km
border countries: Angola 201 km, Cameroon 523 km, Central African Republic 467 km, Democratic Republic of the Congo 2,410 km, Gabon 1,903 km
Cook Islands:
0 km
Coral Sea Islands:
0 km
Costa Rica:
total: 639 km