| Portici to Cartagena | 848.70 mi (1,365.85 km) |
| Portici to Cartama | 1,058.35 mi (1,703.26 km) |
| Portici to Cartaya | 1,175.56 mi (1,891.88 km) |
| Portici to Caspe | 748.95 mi (1,205.31 km) |
| Portici to Cassa de la Selva | 598.83 mi (963.73 km) |
| Portici to Castalla | 811.52 mi (1,306.02 km) |
| Portici to Castellbisbal | 644.06 mi (1,036.51 km) |
| Portici to Castelldefels | 644.50 mi (1,037.22 km) |
| Portici to Castello de Ampurias | 590.62 mi (950.51 km) |
| Portici to Castellon de la Plana | 757.67 mi (1,219.34 km) |
| Portici to Castilleja de la Cuesta | 1,116.09 mi (1,796.17 km) |
| Portici to Catarroja | 784.36 mi (1,262.31 km) |
| Portici to Catral | 827.13 mi (1,331.14 km) |
| Portici to Caudete | 826.06 mi (1,329.42 km) |
| Portici to Cehegin | 880.04 mi (1,416.29 km) |
