| Claiborne to Mangualde | 4,536.88 mi (7,301.41 km) |
| Claiborne to Marco de Canavezes | 4,502.69 mi (7,246.39 km) |
| Claiborne to Marinha Grande | 4,502.74 mi (7,246.46 km) |
| Claiborne to Massama | 4,512.53 mi (7,262.21 km) |
| Claiborne to Matosinhos | 4,476.24 mi (7,203.82 km) |
| Claiborne to Mealhada | 4,509.43 mi (7,257.23 km) |
| Claiborne to Melgaco | 4,472.69 mi (7,198.09 km) |
| Claiborne to Melres | 4,493.75 mi (7,231.99 km) |
| Claiborne to Mira | 4,494.35 mi (7,232.95 km) |
| Claiborne to Miranda do Corvo | 4,522.69 mi (7,278.56 km) |
| Claiborne to Mirandela | 4,541.00 mi (7,308.03 km) |
| Claiborne to Mogadouro | 4,567.28 mi (7,350.33 km) |
| Claiborne to Moimenta da Beira | 4,533.89 mi (7,296.60 km) |
| Claiborne to Moita | 4,529.88 mi (7,290.14 km) |
| Claiborne to Moncao | 4,463.67 mi (7,183.58 km) |
