| Civitavecchia to Coin | 958.18 mi (1,542.05 km) |
| Civitavecchia to Colindres | 777.73 mi (1,251.64 km) |
| Civitavecchia to Collado-Villalba | 824.76 mi (1,327.33 km) |
| Civitavecchia to Colmenar Viejo | 811.96 mi (1,306.73 km) |
| Civitavecchia to Colmenarejo | 826.28 mi (1,329.77 km) |
| Civitavecchia to Conil de la Frontera | 1,036.53 mi (1,668.13 km) |
| Civitavecchia to Consuegra | 825.15 mi (1,327.95 km) |
| Civitavecchia to Corbera de Llobregat | 510.53 mi (821.62 km) |
| Civitavecchia to Cordoba | 922.91 mi (1,485.28 km) |
| Civitavecchia to Coria del Rio | 1,003.39 mi (1,614.80 km) |
| Civitavecchia to Crevillente | 716.00 mi (1,152.29 km) |
| Civitavecchia to Cuarte de Huerva | 654.95 mi (1,054.03 km) |
| Civitavecchia to Cubellas | 526.05 mi (846.60 km) |
| Civitavecchia to Cuellar | 830.78 mi (1,337.01 km) |
| Civitavecchia to Cuenca | 739.08 mi (1,189.43 km) |
