| Pontypridd to Mangualde | 788.44 mi (1,268.87 km) |
| Pontypridd to Marco de Canavezes | 755.02 mi (1,215.09 km) |
| Pontypridd to Marinha Grande | 861.59 mi (1,386.60 km) |
| Pontypridd to Massama | 932.59 mi (1,500.86 km) |
| Pontypridd to Matosinhos | 763.28 mi (1,228.38 km) |
| Pontypridd to Mealhada | 812.48 mi (1,307.56 km) |
| Pontypridd to Melgaco | 695.04 mi (1,118.56 km) |
| Pontypridd to Melres | 766.40 mi (1,233.40 km) |
| Pontypridd to Mira | 813.32 mi (1,308.91 km) |
| Pontypridd to Miranda do Corvo | 829.72 mi (1,335.30 km) |
| Pontypridd to Mirandela | 722.16 mi (1,162.20 km) |
| Pontypridd to Mogadouro | 727.24 mi (1,170.38 km) |
| Pontypridd to Moimenta da Beira | 761.40 mi (1,225.35 km) |
| Pontypridd to Moita | 935.49 mi (1,505.52 km) |
| Pontypridd to Moncao | 701.29 mi (1,128.61 km) |
