| Risca to Cognac | 427.42 mi (687.87 km) |
| Risca to Cogolin | 730.49 mi (1,175.61 km) |
| Risca to Colmar | 524.69 mi (844.41 km) |
| Risca to Colombes | 300.02 mi (482.84 km) |
| Risca to Colomiers | 589.31 mi (948.40 km) |
| Risca to Combs-la-Ville | 322.07 mi (518.32 km) |
| Risca to Comines | 270.45 mi (435.24 km) |
| Risca to Compiegne | 300.67 mi (483.89 km) |
| Risca to Concarneau | 260.54 mi (419.29 km) |
| Risca to Conde-sur-l'Escaut | 301.06 mi (484.51 km) |
| Risca to Conflans-Sainte-Honorine | 291.32 mi (468.83 km) |
| Risca to Corbas | 548.55 mi (882.81 km) |
| Risca to Corbeil-Essonnes | 321.98 mi (518.18 km) |
| Risca to Cormeilles-en-Parisis | 296.02 mi (476.40 km) |
| Risca to Cosne sur Loire | 395.93 mi (637.19 km) |
