| Pen-y-Bont ar Ogwr to Mangualde | 779.23 mi (1,254.04 km) |
| Pen-y-Bont ar Ogwr to Marco de Canavezes | 745.51 mi (1,199.79 km) |
| Pen-y-Bont ar Ogwr to Marinha Grande | 851.97 mi (1,371.11 km) |
| Pen-y-Bont ar Ogwr to Massama | 922.97 mi (1,485.38 km) |
| Pen-y-Bont ar Ogwr to Matosinhos | 753.51 mi (1,212.65 km) |
| Pen-y-Bont ar Ogwr to Mealhada | 802.97 mi (1,292.26 km) |
| Pen-y-Bont ar Ogwr to Melgaco | 685.29 mi (1,102.86 km) |
| Pen-y-Bont ar Ogwr to Melres | 756.79 mi (1,217.93 km) |
| Pen-y-Bont ar Ogwr to Mira | 803.67 mi (1,293.38 km) |
| Pen-y-Bont ar Ogwr to Miranda do Corvo | 820.31 mi (1,320.16 km) |
| Pen-y-Bont ar Ogwr to Mirandela | 713.11 mi (1,147.64 km) |
| Pen-y-Bont ar Ogwr to Mogadouro | 718.49 mi (1,156.29 km) |
| Pen-y-Bont ar Ogwr to Moimenta da Beira | 752.20 mi (1,210.55 km) |
| Pen-y-Bont ar Ogwr to Moita | 926.01 mi (1,490.27 km) |
| Pen-y-Bont ar Ogwr to Moncao | 691.43 mi (1,112.76 km) |
