| Maesteg to Mangualde | 785.19 mi (1,263.63 km) |
| Maesteg to Marco de Canavezes | 751.28 mi (1,209.06 km) |
| Maesteg to Marinha Grande | 857.64 mi (1,380.24 km) |
| Maesteg to Massama | 928.65 mi (1,494.52 km) |
| Maesteg to Matosinhos | 759.08 mi (1,221.61 km) |
| Maesteg to Mealhada | 808.73 mi (1,301.52 km) |
| Maesteg to Melgaco | 690.88 mi (1,111.86 km) |
| Maesteg to Melres | 762.48 mi (1,227.09 km) |
| Maesteg to Mira | 809.33 mi (1,302.48 km) |
| Maesteg to Miranda do Corvo | 826.14 mi (1,329.54 km) |
| Maesteg to Mirandela | 719.17 mi (1,157.40 km) |
| Maesteg to Mogadouro | 724.72 mi (1,166.32 km) |
| Maesteg to Moimenta da Beira | 758.17 mi (1,220.16 km) |
| Maesteg to Moita | 931.79 mi (1,499.57 km) |
| Maesteg to Moncao | 696.95 mi (1,121.63 km) |
