Mauritania
total: 5,074 km
border countries: Algeria 463 km, Mali 2,237 km, Senegal 813 km,
Western Sahara 1,561 km
Mauritius
0 km
Mayotte
0 km
Mexico total: 4,353 km border countries: Belize 250 km, Guatemala 962 km, US 3,141 km
Micronesia, Federated States of 0 km
Moldova
total: 1,390 km
border countries: Romania 450 km, Ukraine 940 km
Monaco
total: 4.4 km
border countries: France 4.4 km
Mongolia
total: 8,220 km
border countries: China 4,677 km, Russia 3,543 km
Montenegro
total: 625 km
border countries: Albania 172 km, Bosnia and Herzegovina 225 km,
Croatia 25 km, Kosovo 79 km, Serbia 124 km
Montserrat
0 km