| Ronciglione to Cartagena | 769.35 mi (1,238.15 km) |
| Ronciglione to Cartama | 975.09 mi (1,569.25 km) |
| Ronciglione to Cartaya | 1,081.90 mi (1,741.15 km) |
| Ronciglione to Caspe | 634.89 mi (1,021.75 km) |
| Ronciglione to Cassa de la Selva | 479.48 mi (771.65 km) |
| Ronciglione to Castalla | 723.10 mi (1,163.71 km) |
| Ronciglione to Castellbisbal | 529.03 mi (851.39 km) |
| Ronciglione to Castelldefels | 531.72 mi (855.72 km) |
| Ronciglione to Castello de Ampurias | 467.06 mi (751.66 km) |
| Ronciglione to Castellon de la Plana | 656.31 mi (1,056.24 km) |
| Ronciglione to Castilleja de la Cuesta | 1,024.15 mi (1,648.21 km) |
| Ronciglione to Catarroja | 688.29 mi (1,107.70 km) |
| Ronciglione to Catral | 742.76 mi (1,195.35 km) |
| Ronciglione to Caudete | 735.64 mi (1,183.90 km) |
| Ronciglione to Cehegin | 793.25 mi (1,276.62 km) |
