| Viersen to Marco de Canavezes | 980.47 mi (1,577.91 km) |
| Viersen to Marinha Grande | 1,083.45 mi (1,743.64 km) |
| Viersen to Massama | 1,149.26 mi (1,849.56 km) |
| Viersen to Matosinhos | 998.97 mi (1,607.69 km) |
| Viersen to Mealhada | 1,033.24 mi (1,662.84 km) |
| Viersen to Melgaco | 935.92 mi (1,506.21 km) |
| Viersen to Melres | 995.00 mi (1,601.29 km) |
| Viersen to Mira | 1,039.87 mi (1,673.50 km) |
| Viersen to Miranda do Corvo | 1,044.88 mi (1,681.57 km) |
| Viersen to Mirandela | 932.43 mi (1,500.60 km) |
| Viersen to Mogadouro | 925.69 mi (1,489.75 km) |
| Viersen to Moimenta da Beira | 973.72 mi (1,567.05 km) |
| Viersen to Moita | 1,146.03 mi (1,844.36 km) |
| Viersen to Moncao | 945.53 mi (1,521.69 km) |
| Viersen to Montalegre | 934.79 mi (1,504.40 km) |
