| Boulogne-Billancourt to Carovigno | 939.69 mi (1,512.28 km) |
| Boulogne-Billancourt to Carpenedolo | 453.39 mi (729.67 km) |
| Boulogne-Billancourt to Carpi | 494.91 mi (796.48 km) |
| Boulogne-Billancourt to Carrara | 497.45 mi (800.57 km) |
| Boulogne-Billancourt to Carugate | 402.74 mi (648.14 km) |
| Boulogne-Billancourt to Casal di Principe | 792.20 mi (1,274.92 km) |
| Boulogne-Billancourt to Casale Monferrato | 388.71 mi (625.57 km) |
| Boulogne-Billancourt to Casale sul Sile | 523.17 mi (841.96 km) |
| Boulogne-Billancourt to Casalecchio di Reno | 523.16 mi (841.94 km) |
| Boulogne-Billancourt to Casalgrande | 497.70 mi (800.97 km) |
| Boulogne-Billancourt to Casalmaggiore | 468.19 mi (753.48 km) |
| Boulogne-Billancourt to Casalnuovo di Napoli | 804.97 mi (1,295.47 km) |
| Boulogne-Billancourt to Casalpusterlengo | 430.63 mi (693.04 km) |
| Boulogne-Billancourt to Casaluce | 795.42 mi (1,280.10 km) |
| Boulogne-Billancourt to Casamassima | 899.00 mi (1,446.80 km) |
