| Onex to Cognac | 310.66 mi (499.96 km) |
| Onex to Cogolin | 203.60 mi (327.65 km) |
| Onex to Colmar | 143.83 mi (231.47 km) |
| Onex to Colombes | 260.78 mi (419.69 km) |
| Onex to Colomiers | 292.94 mi (471.44 km) |
| Onex to Combs-la-Ville | 238.49 mi (383.81 km) |
| Onex to Comines | 346.49 mi (557.61 km) |
| Onex to Compiegne | 270.10 mi (434.68 km) |
| Onex to Concarneau | 485.73 mi (781.70 km) |
| Onex to Conde-sur-l'Escaut | 316.45 mi (509.27 km) |
| Onex to Conflans-Sainte-Honorine | 269.42 mi (433.58 km) |
| Onex to Corbas | 67.69 mi (108.94 km) |
| Onex to Corbeil-Essonnes | 238.35 mi (383.59 km) |
| Onex to Cormeilles-en-Parisis | 264.87 mi (426.27 km) |
| Onex to Cosne sur Loire | 172.44 mi (277.51 km) |
