| Romsey to Mangualde | 777.70 mi (1,251.58 km) |
| Romsey to Marco de Canavezes | 748.04 mi (1,203.85 km) |
| Romsey to Marinha Grande | 855.29 mi (1,376.45 km) |
| Romsey to Massama | 925.77 mi (1,489.88 km) |
| Romsey to Matosinhos | 759.51 mi (1,222.32 km) |
| Romsey to Mealhada | 805.11 mi (1,295.70 km) |
| Romsey to Melgaco | 691.59 mi (1,113.01 km) |
| Romsey to Melres | 760.56 mi (1,224.00 km) |
| Romsey to Mira | 807.65 mi (1,299.79 km) |
| Romsey to Miranda do Corvo | 821.01 mi (1,321.29 km) |
| Romsey to Mirandela | 710.10 mi (1,142.79 km) |
| Romsey to Mogadouro | 711.92 mi (1,145.73 km) |
| Romsey to Moimenta da Beira | 750.70 mi (1,208.14 km) |
| Romsey to Moita | 926.98 mi (1,491.84 km) |
| Romsey to Moncao | 699.02 mi (1,124.96 km) |
