| Siegburg to Marco de Canavezes | 988.84 mi (1,591.38 km) |
| Siegburg to Marinha Grande | 1,090.35 mi (1,754.75 km) |
| Siegburg to Massama | 1,154.99 mi (1,858.77 km) |
| Siegburg to Matosinhos | 1,008.35 mi (1,622.78 km) |
| Siegburg to Mealhada | 1,040.50 mi (1,674.53 km) |
| Siegburg to Melgaco | 946.62 mi (1,523.43 km) |
| Siegburg to Melres | 1,003.58 mi (1,615.11 km) |
| Siegburg to Mira | 1,047.74 mi (1,686.18 km) |
| Siegburg to Miranda do Corvo | 1,051.36 mi (1,692.00 km) |
| Siegburg to Mirandela | 939.61 mi (1,512.16 km) |
| Siegburg to Mogadouro | 931.60 mi (1,499.26 km) |
| Siegburg to Moimenta da Beira | 980.64 mi (1,578.19 km) |
| Siegburg to Moita | 1,151.05 mi (1,852.44 km) |
| Siegburg to Moncao | 956.52 mi (1,539.36 km) |
| Siegburg to Montalegre | 943.93 mi (1,519.10 km) |
