| San Mateo to Mangualde | 5,636.05 mi (9,070.34 km) |
| San Mateo to Marco de Canavezes | 5,593.89 mi (9,002.50 km) |
| San Mateo to Marinha Grande | 5,630.91 mi (9,062.07 km) |
| San Mateo to Massama | 5,663.89 mi (9,115.15 km) |
| San Mateo to Matosinhos | 5,572.89 mi (8,968.70 km) |
| San Mateo to Mealhada | 5,619.99 mi (9,044.50 km) |
| San Mateo to Melgaco | 5,545.64 mi (8,924.84 km) |
| San Mateo to Melres | 5,589.83 mi (8,995.96 km) |
| San Mateo to Mira | 5,606.70 mi (9,023.11 km) |
| San Mateo to Miranda do Corvo | 5,637.82 mi (9,073.19 km) |
| San Mateo to Mirandela | 5,616.25 mi (9,038.48 km) |
| San Mateo to Mogadouro | 5,640.95 mi (9,078.22 km) |
| San Mateo to Moimenta da Beira | 5,623.90 mi (9,050.80 km) |
| San Mateo to Moita | 5,680.45 mi (9,141.80 km) |
| San Mateo to Moncao | 5,539.63 mi (8,915.17 km) |
