| Boulogne-Billancourt to Cosenza | 955.15 mi (1,537.16 km) |
| Boulogne-Billancourt to Cossato | 358.12 mi (576.34 km) |
| Boulogne-Billancourt to Costa Volpino | 422.20 mi (679.46 km) |
| Boulogne-Billancourt to Creazzo | 489.86 mi (788.35 km) |
| Boulogne-Billancourt to Crema | 423.91 mi (682.21 km) |
| Boulogne-Billancourt to Cremona | 447.22 mi (719.74 km) |
| Boulogne-Billancourt to Crevalcore | 508.10 mi (817.71 km) |
| Boulogne-Billancourt to Crispiano | 927.55 mi (1,492.75 km) |
| Boulogne-Billancourt to Crosia | 960.26 mi (1,545.39 km) |
| Boulogne-Billancourt to Crotone | 997.44 mi (1,605.22 km) |
| Boulogne-Billancourt to Cuneo | 397.44 mi (639.61 km) |
| Boulogne-Billancourt to Cuorgne | 348.21 mi (560.38 km) |
| Boulogne-Billancourt to Cusano Milanino | 396.95 mi (638.83 km) |
| Boulogne-Billancourt to Cutro | 995.15 mi (1,601.53 km) |
| Boulogne-Billancourt to Cutrofiano | 987.58 mi (1,589.35 km) |
