| Royan to Cognac | 34.84 mi (56.07 km) |
| Royan to Cogolin | 407.72 mi (656.16 km) |
| Royan to Colmar | 431.38 mi (694.24 km) |
| Royan to Colombes | 275.38 mi (443.18 km) |
| Royan to Colomiers | 181.56 mi (292.19 km) |
| Royan to Combs-la-Ville | 270.10 mi (434.68 km) |
| Royan to Comines | 400.90 mi (645.19 km) |
| Royan to Compiegne | 318.00 mi (511.77 km) |
| Royan to Concarneau | 206.73 mi (332.70 km) |
| Royan to Conde-sur-l'Escaut | 396.08 mi (637.42 km) |
| Royan to Conflans-Sainte-Honorine | 275.75 mi (443.78 km) |
| Royan to Corbas | 287.11 mi (462.06 km) |
| Royan to Corbeil-Essonnes | 264.84 mi (426.21 km) |
| Royan to Cormeilles-en-Parisis | 276.91 mi (445.65 km) |
| Royan to Cosne sur Loire | 225.44 mi (362.81 km) |
