| Onnaing to Cognac | 371.37 mi (597.66 km) |
| Onnaing to Cogolin | 512.01 mi (824.00 km) |
| Onnaing to Colmar | 232.59 mi (374.32 km) |
| Onnaing to Colombes | 117.72 mi (189.45 km) |
| Onnaing to Colomiers | 479.95 mi (772.40 km) |
| Onnaing to Combs-la-Ville | 127.49 mi (205.17 km) |
| Onnaing to Comines | 36.55 mi (58.83 km) |
| Onnaing to Compiegne | 75.55 mi (121.59 km) |
| Onnaing to Concarneau | 381.37 mi (613.75 km) |
| Onnaing to Conde-sur-l'Escaut | 4.26 mi (6.85 km) |
| Onnaing to Conflans-Sainte-Honorine | 117.04 mi (188.35 km) |
| Onnaing to Corbas | 331.60 mi (533.66 km) |
| Onnaing to Corbeil-Essonnes | 132.40 mi (213.07 km) |
| Onnaing to Cormeilles-en-Parisis | 115.94 mi (186.58 km) |
| Onnaing to Cosne sur Loire | 207.98 mi (334.71 km) |
