| Strood to Mangualde | 842.59 mi (1,356.02 km) |
| Strood to Marco de Canavezes | 815.62 mi (1,312.61 km) |
| Strood to Marinha Grande | 922.58 mi (1,484.76 km) |
| Strood to Massama | 992.34 mi (1,597.02 km) |
| Strood to Matosinhos | 829.01 mi (1,334.16 km) |
| Strood to Mealhada | 872.04 mi (1,403.41 km) |
| Strood to Melgaco | 761.79 mi (1,225.98 km) |
| Strood to Melres | 828.76 mi (1,333.76 km) |
| Strood to Mira | 875.65 mi (1,409.22 km) |
| Strood to Miranda do Corvo | 886.96 mi (1,427.42 km) |
| Strood to Mirandela | 774.66 mi (1,246.69 km) |
| Strood to Mogadouro | 774.21 mi (1,245.97 km) |
| Strood to Moimenta da Beira | 815.84 mi (1,312.96 km) |
| Strood to Moita | 992.44 mi (1,597.18 km) |
| Strood to Moncao | 769.85 mi (1,238.95 km) |
