| Civitavecchia to Cartagena | 744.89 mi (1,198.78 km) |
| Civitavecchia to Cartama | 950.89 mi (1,530.31 km) |
| Civitavecchia to Cartaya | 1,058.40 mi (1,703.33 km) |
| Civitavecchia to Caspe | 613.20 mi (986.85 km) |
| Civitavecchia to Cassa de la Selva | 458.37 mi (737.67 km) |
| Civitavecchia to Castalla | 699.06 mi (1,125.02 km) |
| Civitavecchia to Castellbisbal | 507.33 mi (816.47 km) |
| Civitavecchia to Castelldefels | 509.71 mi (820.30 km) |
| Civitavecchia to Castello de Ampurias | 446.69 mi (718.87 km) |
| Civitavecchia to Castellon de la Plana | 633.19 mi (1,019.02 km) |
| Civitavecchia to Castilleja de la Cuesta | 1,000.50 mi (1,610.15 km) |
| Civitavecchia to Catarroja | 664.75 mi (1,069.81 km) |
| Civitavecchia to Catral | 718.51 mi (1,156.33 km) |
| Civitavecchia to Caudete | 711.73 mi (1,145.42 km) |
| Civitavecchia to Cehegin | 769.16 mi (1,237.85 km) |
