| Southaven to Mangualde | 4,338.99 mi (6,982.92 km) |
| Southaven to Marco de Canavezes | 4,304.24 mi (6,927.00 km) |
| Southaven to Marinha Grande | 4,306.44 mi (6,930.54 km) |
| Southaven to Massama | 4,317.74 mi (6,948.72 km) |
| Southaven to Matosinhos | 4,278.00 mi (6,884.78 km) |
| Southaven to Mealhada | 4,312.10 mi (6,939.66 km) |
| Southaven to Melgaco | 4,273.15 mi (6,876.97 km) |
| Southaven to Melres | 4,295.53 mi (6,912.99 km) |
| Southaven to Mira | 4,297.07 mi (6,915.46 km) |
| Southaven to Miranda do Corvo | 4,325.67 mi (6,961.49 km) |
| Southaven to Mirandela | 4,341.80 mi (6,987.45 km) |
| Southaven to Mogadouro | 4,368.09 mi (7,029.76 km) |
| Southaven to Moimenta da Beira | 4,335.48 mi (6,977.27 km) |
| Southaven to Moita | 4,335.10 mi (6,976.66 km) |
| Southaven to Moncao | 4,264.26 mi (6,862.67 km) |
