| Portici to Coin | 1,065.64 mi (1,714.98 km) |
| Portici to Colindres | 927.20 mi (1,492.19 km) |
| Portici to Collado-Villalba | 959.12 mi (1,543.56 km) |
| Portici to Colmenar Viejo | 946.29 mi (1,522.91 km) |
| Portici to Colmenarejo | 960.18 mi (1,545.25 km) |
| Portici to Conil de la Frontera | 1,144.69 mi (1,842.20 km) |
| Portici to Consuegra | 950.92 mi (1,530.36 km) |
| Portici to Corbera de Llobregat | 646.71 mi (1,040.77 km) |
| Portici to Cordoba | 1,039.29 mi (1,672.58 km) |
| Portici to Coria del Rio | 1,118.31 mi (1,799.74 km) |
| Portici to Crevillente | 825.49 mi (1,328.50 km) |
| Portici to Cuarte de Huerva | 793.90 mi (1,277.66 km) |
| Portici to Cubellas | 660.37 mi (1,062.76 km) |
| Portici to Cuellar | 970.08 mi (1,561.19 km) |
| Portici to Cuenca | 867.44 mi (1,396.00 km) |
