| Cuellar to Mangualde | 187.99 mi (302.54 km) |
| Cuellar to Marco de Canavezes | 199.71 mi (321.40 km) |
| Cuellar to Marinha Grande | 267.88 mi (431.12 km) |
| Cuellar to Massama | 319.55 mi (514.27 km) |
| Cuellar to Matosinhos | 228.19 mi (367.23 km) |
| Cuellar to Mealhada | 227.17 mi (365.60 km) |
| Cuellar to Melgaco | 209.64 mi (337.38 km) |
| Cuellar to Melres | 213.56 mi (343.69 km) |
| Cuellar to Mira | 240.21 mi (386.59 km) |
| Cuellar to Miranda do Corvo | 228.77 mi (368.16 km) |
| Cuellar to Mirandela | 148.66 mi (239.24 km) |
| Cuellar to Mogadouro | 124.69 mi (200.67 km) |
| Cuellar to Moimenta da Beira | 174.02 mi (280.06 km) |
| Cuellar to Moita | 311.64 mi (501.53 km) |
| Cuellar to Moncao | 219.75 mi (353.66 km) |
