| Grande-Synthe to Cognac | 386.74 mi (622.40 km) |
| Grande-Synthe to Cogolin | 571.64 mi (919.97 km) |
| Grande-Synthe to Colmar | 303.77 mi (488.87 km) |
| Grande-Synthe to Colombes | 144.44 mi (232.46 km) |
| Grande-Synthe to Colomiers | 513.28 mi (826.04 km) |
| Grande-Synthe to Combs-la-Ville | 162.35 mi (261.28 km) |
| Grande-Synthe to Comines | 35.35 mi (56.88 km) |
| Grande-Synthe to Compiegne | 112.85 mi (181.61 km) |
| Grande-Synthe to Concarneau | 353.56 mi (569.00 km) |
| Grande-Synthe to Conde-sur-l'Escaut | 68.51 mi (110.26 km) |
| Grande-Synthe to Conflans-Sainte-Honorine | 139.50 mi (224.50 km) |
| Grande-Synthe to Corbas | 388.10 mi (624.59 km) |
| Grande-Synthe to Corbeil-Essonnes | 166.02 mi (267.18 km) |
| Grande-Synthe to Cormeilles-en-Parisis | 141.02 mi (226.95 km) |
| Grande-Synthe to Cosne sur Loire | 250.56 mi (403.24 km) |
