| Portici to Cividale del Friuli | 367.66 mi (591.68 km) |
| Portici to Civita Castellana | 142.73 mi (229.70 km) |
| Portici to Civitanova Marche | 174.18 mi (280.32 km) |
| Portici to Civitavecchia | 158.54 mi (255.14 km) |
| Portici to Civitella in Val di Chiana | 224.22 mi (360.85 km) |
| Portici to Clusone | 413.46 mi (665.39 km) |
| Portici to Coccaglio | 394.47 mi (634.84 km) |
| Portici to Codigoro | 299.31 mi (481.70 km) |
| Portici to Codogno | 380.43 mi (612.23 km) |
| Portici to Codroipo | 361.84 mi (582.32 km) |
| Portici to Cogoleto | 380.25 mi (611.95 km) |
| Portici to Colle di Val d'Elsa | 242.49 mi (390.25 km) |
| Portici to Colle Salvetti | 275.40 mi (443.22 km) |
| Portici to Collecchio | 342.66 mi (551.45 km) |
| Portici to Colleferro | 93.35 mi (150.23 km) |
