| Boulogne-Billancourt to Civita Castellana | 666.85 mi (1,073.19 km) |
| Boulogne-Billancourt to Civitanova Marche | 669.51 mi (1,077.48 km) |
| Boulogne-Billancourt to Civitavecchia | 655.62 mi (1,055.12 km) |
| Boulogne-Billancourt to Civitella in Val di Chiana | 587.51 mi (945.51 km) |
| Boulogne-Billancourt to Clusone | 414.18 mi (666.57 km) |
| Boulogne-Billancourt to Coccaglio | 427.52 mi (688.03 km) |
| Boulogne-Billancourt to Codigoro | 541.93 mi (872.14 km) |
| Boulogne-Billancourt to Codogno | 433.49 mi (697.64 km) |
| Boulogne-Billancourt to Codroipo | 539.42 mi (868.12 km) |
| Boulogne-Billancourt to Cogoleto | 431.88 mi (695.05 km) |
| Boulogne-Billancourt to Colle di Val d'Elsa | 567.14 mi (912.72 km) |
| Boulogne-Billancourt to Colle Salvetti | 534.33 mi (859.92 km) |
| Boulogne-Billancourt to Collecchio | 470.78 mi (757.64 km) |
| Boulogne-Billancourt to Colleferro | 716.49 mi (1,153.08 km) |
| Boulogne-Billancourt to Collegno | 361.25 mi (581.38 km) |
