| Rhymney to Mangualde | 799.55 mi (1,286.75 km) |
| Rhymney to Marco de Canavezes | 766.09 mi (1,232.91 km) |
| Rhymney to Marinha Grande | 872.64 mi (1,404.38 km) |
| Rhymney to Massama | 943.64 mi (1,518.65 km) |
| Rhymney to Matosinhos | 774.30 mi (1,246.12 km) |
| Rhymney to Mealhada | 823.55 mi (1,325.38 km) |
| Rhymney to Melgaco | 706.06 mi (1,136.30 km) |
| Rhymney to Melres | 777.45 mi (1,251.18 km) |
| Rhymney to Mira | 824.36 mi (1,326.69 km) |
| Rhymney to Miranda do Corvo | 840.81 mi (1,353.15 km) |
| Rhymney to Mirandela | 733.28 mi (1,180.10 km) |
| Rhymney to Mogadouro | 738.38 mi (1,188.30 km) |
| Rhymney to Moimenta da Beira | 772.51 mi (1,243.23 km) |
| Rhymney to Moita | 946.56 mi (1,523.35 km) |
| Rhymney to Moncao | 712.29 mi (1,146.32 km) |
