| Royan to Carpentras | 317.40 mi (510.81 km) |
| Royan to Carquefou | 117.61 mi (189.28 km) |
| Royan to Carqueiranne | 392.37 mi (631.46 km) |
| Royan to Carrieres-sous-Poissy | 271.30 mi (436.61 km) |
| Royan to Carrieres-sur-Seine | 275.63 mi (443.59 km) |
| Royan to Carros | 424.01 mi (682.38 km) |
| Royan to Carvin | 383.74 mi (617.58 km) |
| Royan to Castanet-Tolosan | 191.94 mi (308.90 km) |
| Royan to Castelginest | 180.48 mi (290.45 km) |
| Royan to Castelnau-le-Lez | 279.13 mi (449.22 km) |
| Royan to Castelnaudary | 217.22 mi (349.59 km) |
| Royan to Castelsarrasin | 151.85 mi (244.38 km) |
| Royan to Castres | 213.92 mi (344.27 km) |
| Royan to Caudebec-les-Elbeuf | 270.47 mi (435.28 km) |
| Royan to Caudry | 373.18 mi (600.58 km) |
