| Ronciglione to Cognac | 665.58 mi (1,071.15 km) |
| Ronciglione to Cogolin | 295.84 mi (476.11 km) |
| Ronciglione to Colmar | 464.70 mi (747.87 km) |
| Ronciglione to Colombes | 663.80 mi (1,068.29 km) |
| Ronciglione to Colomiers | 557.25 mi (896.81 km) |
| Ronciglione to Combs-la-Ville | 641.82 mi (1,032.91 km) |
| Ronciglione to Comines | 729.69 mi (1,174.33 km) |
| Ronciglione to Compiegne | 667.32 mi (1,073.95 km) |
| Ronciglione to Concarneau | 874.33 mi (1,407.09 km) |
| Ronciglione to Conde-sur-l'Escaut | 696.78 mi (1,121.36 km) |
| Ronciglione to Conflans-Sainte-Honorine | 672.51 mi (1,082.30 km) |
| Ronciglione to Corbas | 431.81 mi (694.93 km) |
| Ronciglione to Corbeil-Essonnes | 642.10 mi (1,033.36 km) |
| Ronciglione to Cormeilles-en-Parisis | 667.80 mi (1,074.72 km) |
| Ronciglione to Cosne sur Loire | 575.75 mi (926.58 km) |
