| Rayleigh to Mangualde | 856.86 mi (1,378.98 km) |
| Rayleigh to Marco de Canavezes | 829.77 mi (1,335.39 km) |
| Rayleigh to Marinha Grande | 936.77 mi (1,507.58 km) |
| Rayleigh to Massama | 1,006.56 mi (1,619.90 km) |
| Rayleigh to Matosinhos | 843.07 mi (1,356.79 km) |
| Rayleigh to Mealhada | 886.23 mi (1,426.25 km) |
| Rayleigh to Melgaco | 775.81 mi (1,248.54 km) |
| Rayleigh to Melres | 842.89 mi (1,356.50 km) |
| Rayleigh to Mira | 889.79 mi (1,431.98 km) |
| Rayleigh to Miranda do Corvo | 901.19 mi (1,450.33 km) |
| Rayleigh to Mirandela | 788.93 mi (1,269.65 km) |
| Rayleigh to Mogadouro | 788.55 mi (1,269.04 km) |
| Rayleigh to Moimenta da Beira | 830.09 mi (1,335.90 km) |
| Rayleigh to Moita | 1,006.70 mi (1,620.12 km) |
| Rayleigh to Moncao | 783.83 mi (1,261.45 km) |
