| Boulogne-sur-Mer to Coueron | 285.86 mi (460.05 km) |
| Boulogne-sur-Mer to Coulommiers | 147.39 mi (237.20 km) |
| Boulogne-sur-Mer to Courbevoic | 129.51 mi (208.42 km) |
| Boulogne-sur-Mer to Courcouronnes | 149.76 mi (241.02 km) |
| Boulogne-sur-Mer to Cournon-d'Auvergne | 351.97 mi (566.44 km) |
| Boulogne-sur-Mer to Courrieres | 61.32 mi (98.68 km) |
| Boulogne-sur-Mer to Coutras | 401.03 mi (645.39 km) |
| Boulogne-sur-Mer to Couzeix | 335.57 mi (540.04 km) |
| Boulogne-sur-Mer to Cran-Gevrier | 391.73 mi (630.43 km) |
| Boulogne-sur-Mer to Craponne | 372.62 mi (599.68 km) |
| Boulogne-sur-Mer to Creil | 108.52 mi (174.65 km) |
| Boulogne-sur-Mer to Crepy-en-Valois | 117.58 mi (189.22 km) |
| Boulogne-sur-Mer to Crest | 443.53 mi (713.80 km) |
| Boulogne-sur-Mer to Creteil | 138.97 mi (223.65 km) |
| Boulogne-sur-Mer to Creutzwald | 249.01 mi (400.74 km) |
