| Castelo Branco to Los Palacios y Villafranca | 202.21 mi (325.43 km) |
| Castelo Branco to Luanco | 276.52 mi (445.01 km) |
| Castelo Branco to Lucena | 233.23 mi (375.35 km) |
| Castelo Branco to Lugo | 221.11 mi (355.85 km) |
| Castelo Branco to Lumbreras | 344.14 mi (553.84 km) |
| Castelo Branco to Madrid | 204.83 mi (329.65 km) |
| Castelo Branco to Madridejos | 212.41 mi (341.84 km) |
| Castelo Branco to Mahon | 623.57 mi (1,003.54 km) |
| Castelo Branco to Mairena del Alcor | 194.30 mi (312.70 km) |
| Castelo Branco to Mairena del Aljarafe | 188.24 mi (302.94 km) |
| Castelo Branco to Majadahonda | 196.88 mi (316.85 km) |
| Castelo Branco to Malaga | 271.46 mi (436.87 km) |
| Castelo Branco to Malgrat de Mar | 550.61 mi (886.11 km) |
| Castelo Branco to Manacor | 569.26 mi (916.13 km) |
| Castelo Branco to Mancha Real | 251.94 mi (405.46 km) |
