| Socastee to Mangualde | 3,845.85 mi (6,189.30 km) |
| Socastee to Marco de Canavezes | 3,814.66 mi (6,139.11 km) |
| Socastee to Marinha Grande | 3,804.45 mi (6,122.67 km) |
| Socastee to Massama | 3,807.85 mi (6,128.14 km) |
| Socastee to Matosinhos | 3,787.27 mi (6,095.02 km) |
| Socastee to Mealhada | 3,815.84 mi (6,140.99 km) |
| Socastee to Melgaco | 3,790.58 mi (6,100.35 km) |
| Socastee to Melres | 3,804.54 mi (6,122.81 km) |
| Socastee to Mira | 3,800.57 mi (6,116.43 km) |
| Socastee to Miranda do Corvo | 3,827.54 mi (6,159.83 km) |
| Socastee to Mirandela | 3,856.62 mi (6,206.62 km) |
| Socastee to Mogadouro | 3,882.75 mi (6,248.67 km) |
| Socastee to Moimenta da Beira | 3,845.49 mi (6,188.72 km) |
| Socastee to Moita | 3,825.07 mi (6,155.86 km) |
| Socastee to Moncao | 3,780.91 mi (6,084.78 km) |
