| Olonne-sur-Mer to Cognac | 90.28 mi (145.30 km) |
| Olonne-sur-Mer to Cogolin | 465.08 mi (748.48 km) |
| Olonne-sur-Mer to Colmar | 440.49 mi (708.90 km) |
| Olonne-sur-Mer to Colombes | 249.34 mi (401.28 km) |
| Olonne-sur-Mer to Colomiers | 252.51 mi (406.38 km) |
| Olonne-sur-Mer to Combs-la-Ville | 249.90 mi (402.18 km) |
| Olonne-sur-Mer to Comines | 364.31 mi (586.29 km) |
| Olonne-sur-Mer to Compiegne | 291.03 mi (468.36 km) |
| Olonne-sur-Mer to Concarneau | 136.77 mi (220.12 km) |
| Olonne-sur-Mer to Conde-sur-l'Escaut | 365.07 mi (587.52 km) |
| Olonne-sur-Mer to Conflans-Sainte-Honorine | 247.49 mi (398.30 km) |
| Olonne-sur-Mer to Corbas | 325.24 mi (523.42 km) |
| Olonne-sur-Mer to Corbeil-Essonnes | 244.77 mi (393.92 km) |
| Olonne-sur-Mer to Cormeilles-en-Parisis | 249.84 mi (402.08 km) |
| Olonne-sur-Mer to Cosne sur Loire | 229.53 mi (369.39 km) |
