| Sona to Marco de Canavezes | 995.84 mi (1,602.65 km) |
| Sona to Marinha Grande | 1,075.91 mi (1,731.51 km) |
| Sona to Massama | 1,125.41 mi (1,811.17 km) |
| Sona to Matosinhos | 1,022.10 mi (1,644.90 km) |
| Sona to Mealhada | 1,033.28 mi (1,662.90 km) |
| Sona to Melgaco | 977.51 mi (1,573.15 km) |
| Sona to Melres | 1,010.99 mi (1,627.03 km) |
| Sona to Mira | 1,045.17 mi (1,682.04 km) |
| Sona to Miranda do Corvo | 1,036.55 mi (1,668.16 km) |
| Sona to Mirandela | 941.45 mi (1,515.11 km) |
| Sona to Mogadouro | 923.47 mi (1,486.19 km) |
| Sona to Moimenta da Beira | 976.04 mi (1,570.79 km) |
| Sona to Moita | 1,115.72 mi (1,795.58 km) |
| Sona to Moncao | 988.81 mi (1,591.34 km) |
| Sona to Montalegre | 961.84 mi (1,547.94 km) |
