| Boulogne-Billancourt to Castelli Calepio | 421.66 mi (678.60 km) |
| Boulogne-Billancourt to Castelnovo ne' Monti | 491.82 mi (791.51 km) |
| Boulogne-Billancourt to Castelnuovo Berardenga | 583.04 mi (938.31 km) |
| Boulogne-Billancourt to Castelnuovo di Porto | 678.16 mi (1,091.40 km) |
| Boulogne-Billancourt to Castelnuovo di Verona | 464.19 mi (747.03 km) |
| Boulogne-Billancourt to Castelnuovo Rangone | 506.80 mi (815.62 km) |
| Boulogne-Billancourt to Castelvetrano | 933.80 mi (1,502.81 km) |
| Boulogne-Billancourt to Castelvetro di Modena | 509.61 mi (820.14 km) |
| Boulogne-Billancourt to Castenaso | 529.32 mi (851.85 km) |
| Boulogne-Billancourt to Castenedolo | 443.86 mi (714.32 km) |
| Boulogne-Billancourt to Castiglion Fiorentino | 598.38 mi (963.00 km) |
| Boulogne-Billancourt to Castiglione del Lago | 612.80 mi (986.21 km) |
| Boulogne-Billancourt to Castiglione delle Stiviere | 454.74 mi (731.83 km) |
| Boulogne-Billancourt to Castrolibero | 952.51 mi (1,532.91 km) |
| Boulogne-Billancourt to Castrovillari | 927.03 mi (1,491.90 km) |
