| Solon to Mangualde | 3,718.42 mi (5,984.22 km) |
| Solon to Marco de Canavezes | 3,682.34 mi (5,926.16 km) |
| Solon to Marinha Grande | 3,689.95 mi (5,938.41 km) |
| Solon to Massama | 3,705.11 mi (5,962.80 km) |
| Solon to Matosinhos | 3,656.68 mi (5,884.86 km) |
| Solon to Mealhada | 3,692.99 mi (5,943.29 km) |
| Solon to Melgaco | 3,648.67 mi (5,871.97 km) |
| Solon to Melres | 3,674.25 mi (5,913.14 km) |
| Solon to Mira | 3,678.12 mi (5,919.36 km) |
| Solon to Miranda do Corvo | 3,707.32 mi (5,966.36 km) |
| Solon to Mirandela | 3,718.04 mi (5,983.61 km) |
| Solon to Mogadouro | 3,744.29 mi (6,025.85 km) |
| Solon to Moimenta da Beira | 3,713.62 mi (5,976.50 km) |
| Solon to Moita | 3,722.46 mi (5,990.72 km) |
| Solon to Moncao | 3,640.11 mi (5,858.18 km) |
