| Swidwin to Marco de Canavezes | 1,404.34 mi (2,260.07 km) |
| Swidwin to Marinha Grande | 1,505.08 mi (2,422.20 km) |
| Swidwin to Massama | 1,568.84 mi (2,524.81 km) |
| Swidwin to Matosinhos | 1,424.15 mi (2,291.94 km) |
| Swidwin to Mealhada | 1,455.48 mi (2,342.36 km) |
| Swidwin to Melgaco | 1,362.60 mi (2,192.89 km) |
| Swidwin to Melres | 1,419.15 mi (2,283.90 km) |
| Swidwin to Mira | 1,463.01 mi (2,354.49 km) |
| Swidwin to Miranda do Corvo | 1,465.87 mi (2,359.09 km) |
| Swidwin to Mirandela | 1,354.64 mi (2,180.08 km) |
| Swidwin to Mogadouro | 1,345.88 mi (2,165.99 km) |
| Swidwin to Moimenta da Beira | 1,395.48 mi (2,245.81 km) |
| Swidwin to Moita | 1,564.34 mi (2,517.56 km) |
| Swidwin to Moncao | 1,372.50 mi (2,208.83 km) |
| Swidwin to Montalegre | 1,359.68 mi (2,188.20 km) |
