| Portici to Carpentras | 523.52 mi (842.52 km) |
| Portici to Carquefou | 902.20 mi (1,451.96 km) |
| Portici to Carqueiranne | 452.70 mi (728.55 km) |
| Portici to Carrieres-sous-Poissy | 821.59 mi (1,322.22 km) |
| Portici to Carrieres-sur-Seine | 811.13 mi (1,305.39 km) |
| Portici to Carros | 418.19 mi (673.02 km) |
| Portici to Carvin | 863.38 mi (1,389.48 km) |
| Portici to Castanet-Tolosan | 682.77 mi (1,098.81 km) |
| Portici to Castelginest | 688.50 mi (1,108.03 km) |
| Portici to Castelnau-le-Lez | 567.96 mi (914.05 km) |
| Portici to Castelnaudary | 657.68 mi (1,058.43 km) |
| Portici to Castelsarrasin | 709.70 mi (1,142.16 km) |
| Portici to Castres | 647.22 mi (1,041.60 km) |
| Portici to Caudebec-les-Elbeuf | 872.05 mi (1,403.44 km) |
| Portici to Caudry | 831.16 mi (1,337.62 km) |
