| Siauliai to Marco de Canavezes | 1,739.08 mi (2,798.77 km) |
| Siauliai to Marinha Grande | 1,839.83 mi (2,960.91 km) |
| Siauliai to Massama | 1,903.46 mi (3,063.32 km) |
| Siauliai to Matosinhos | 1,758.79 mi (2,830.50 km) |
| Siauliai to Mealhada | 1,790.23 mi (2,881.10 km) |
| Siauliai to Melgaco | 1,697.01 mi (2,731.07 km) |
| Siauliai to Melres | 1,753.87 mi (2,822.58 km) |
| Siauliai to Mira | 1,797.77 mi (2,893.23 km) |
| Siauliai to Miranda do Corvo | 1,800.59 mi (2,897.78 km) |
| Siauliai to Mirandela | 1,689.40 mi (2,718.82 km) |
| Siauliai to Mogadouro | 1,680.58 mi (2,704.64 km) |
| Siauliai to Moimenta da Beira | 1,730.23 mi (2,784.54 km) |
| Siauliai to Moita | 1,898.84 mi (3,055.88 km) |
| Siauliai to Moncao | 1,706.85 mi (2,746.91 km) |
| Siauliai to Montalegre | 1,694.34 mi (2,726.78 km) |
