| Spiez to Mangualde | 876.15 mi (1,410.03 km) |
| Spiez to Marco de Canavezes | 871.82 mi (1,403.06 km) |
| Spiez to Marinha Grande | 960.59 mi (1,545.92 km) |
| Spiez to Massama | 1,016.27 mi (1,635.53 km) |
| Spiez to Matosinhos | 896.38 mi (1,442.58 km) |
| Spiez to Mealhada | 914.73 mi (1,472.11 km) |
| Spiez to Melgaco | 845.58 mi (1,360.82 km) |
| Spiez to Melres | 887.13 mi (1,427.69 km) |
| Spiez to Mira | 925.25 mi (1,489.05 km) |
| Spiez to Miranda do Corvo | 920.68 mi (1,481.69 km) |
| Spiez to Mirandela | 818.03 mi (1,316.49 km) |
| Spiez to Mogadouro | 803.02 mi (1,292.33 km) |
| Spiez to Moimenta da Beira | 855.51 mi (1,376.80 km) |
| Spiez to Moita | 1,008.54 mi (1,623.08 km) |
| Spiez to Moncao | 856.67 mi (1,378.67 km) |
