| Olonne-sur-Mer to Coudekerque-Branche | 363.40 mi (584.83 km) |
| Olonne-sur-Mer to Coueron | 47.01 mi (75.65 km) |
| Olonne-sur-Mer to Coulommiers | 275.32 mi (443.09 km) |
| Olonne-sur-Mer to Courbevoic | 248.23 mi (399.49 km) |
| Olonne-sur-Mer to Courcouronnes | 243.19 mi (391.37 km) |
| Olonne-sur-Mer to Cournon-d'Auvergne | 244.14 mi (392.90 km) |
| Olonne-sur-Mer to Courrieres | 346.46 mi (557.57 km) |
| Olonne-sur-Mer to Coutras | 130.17 mi (209.50 km) |
| Olonne-sur-Mer to Couzeix | 151.03 mi (243.06 km) |
| Olonne-sur-Mer to Cran-Gevrier | 378.91 mi (609.80 km) |
| Olonne-sur-Mer to Craponne | 315.66 mi (508.01 km) |
| Olonne-sur-Mer to Creil | 272.41 mi (438.39 km) |
| Olonne-sur-Mer to Crepy-en-Valois | 285.19 mi (458.96 km) |
| Olonne-sur-Mer to Crest | 351.11 mi (565.06 km) |
| Olonne-sur-Mer to Creteil | 251.18 mi (404.23 km) |
