| Clevedon to Mangualde | 784.24 mi (1,262.11 km) |
| Clevedon to Marco de Canavezes | 751.76 mi (1,209.84 km) |
| Clevedon to Marinha Grande | 858.64 mi (1,381.85 km) |
| Clevedon to Massama | 929.57 mi (1,496.00 km) |
| Clevedon to Matosinhos | 760.88 mi (1,224.51 km) |
| Clevedon to Mealhada | 809.20 mi (1,302.27 km) |
| Clevedon to Melgaco | 692.62 mi (1,114.66 km) |
| Clevedon to Melres | 763.45 mi (1,228.66 km) |
| Clevedon to Mira | 810.48 mi (1,304.34 km) |
| Clevedon to Miranda do Corvo | 826.10 mi (1,329.48 km) |
| Clevedon to Mirandela | 717.52 mi (1,154.74 km) |
| Clevedon to Mogadouro | 721.76 mi (1,161.57 km) |
| Clevedon to Moimenta da Beira | 757.17 mi (1,218.55 km) |
| Clevedon to Moita | 932.03 mi (1,499.96 km) |
| Clevedon to Moncao | 699.18 mi (1,125.23 km) |
