| Castelo Branco to Cervello | 507.75 mi (817.14 km) |
| Castelo Branco to Cervera | 476.35 mi (766.62 km) |
| Castelo Branco to Ceuti | 355.44 mi (572.03 km) |
| Castelo Branco to Cheste | 363.25 mi (584.59 km) |
| Castelo Branco to Chiclana de la Frontera | 246.10 mi (396.07 km) |
| Castelo Branco to Chipiona | 220.75 mi (355.27 km) |
| Castelo Branco to Chiva | 361.44 mi (581.68 km) |
| Castelo Branco to Churriana de la Vega | 277.99 mi (447.38 km) |
| Castelo Branco to Ciempozuelos | 206.83 mi (332.86 km) |
| Castelo Branco to Cieza | 344.03 mi (553.66 km) |
| Castelo Branco to Cisterniga | 192.92 mi (310.47 km) |
| Castelo Branco to Ciudad de Melilla | 400.29 mi (644.21 km) |
| Castelo Branco to Ciudad Real | 199.78 mi (321.51 km) |
| Castelo Branco to Ciudad-Rodrigo | 74.00 mi (119.09 km) |
| Castelo Branco to Cocentaina | 384.63 mi (619.01 km) |
