| Olonne-sur-Mer to Carpentras | 373.05 mi (600.36 km) |
| Olonne-sur-Mer to Carquefou | 54.20 mi (87.23 km) |
| Olonne-sur-Mer to Carqueiranne | 451.82 mi (727.13 km) |
| Olonne-sur-Mer to Carrieres-sous-Poissy | 243.10 mi (391.24 km) |
| Olonne-sur-Mer to Carrieres-sur-Seine | 250.06 mi (402.43 km) |
| Olonne-sur-Mer to Carros | 476.41 mi (766.71 km) |
| Olonne-sur-Mer to Carvin | 348.61 mi (561.03 km) |
| Olonne-sur-Mer to Castanet-Tolosan | 262.76 mi (422.87 km) |
| Olonne-sur-Mer to Castelginest | 250.95 mi (403.87 km) |
| Olonne-sur-Mer to Castelnau-le-Lez | 341.56 mi (549.68 km) |
| Olonne-sur-Mer to Castelnaudary | 287.45 mi (462.61 km) |
| Olonne-sur-Mer to Castelsarrasin | 222.09 mi (357.42 km) |
| Olonne-sur-Mer to Castres | 282.22 mi (454.19 km) |
| Olonne-sur-Mer to Caudebec-les-Elbeuf | 229.54 mi (369.42 km) |
| Olonne-sur-Mer to Caudry | 343.65 mi (553.05 km) |
