| Boulogne-Billancourt to Catania | 1,013.34 mi (1,630.81 km) |
| Boulogne-Billancourt to Catanzaro | 988.27 mi (1,590.47 km) |
| Boulogne-Billancourt to Cattolica | 601.72 mi (968.38 km) |
| Boulogne-Billancourt to Cava de' Tirreni | 828.41 mi (1,333.19 km) |
| Boulogne-Billancourt to Cavallino | 978.23 mi (1,574.31 km) |
| Boulogne-Billancourt to Cavarzere | 528.98 mi (851.31 km) |
| Boulogne-Billancourt to Cave | 709.35 mi (1,141.59 km) |
| Boulogne-Billancourt to Cavriago | 484.99 mi (780.51 km) |
| Boulogne-Billancourt to Cavriglia | 574.24 mi (924.14 km) |
| Boulogne-Billancourt to Cazzago San Martino | 428.70 mi (689.92 km) |
| Boulogne-Billancourt to Ceccano | 736.07 mi (1,184.59 km) |
| Boulogne-Billancourt to Cecina | 549.61 mi (884.50 km) |
| Boulogne-Billancourt to Cefalu | 949.58 mi (1,528.20 km) |
| Boulogne-Billancourt to Ceglie Messapico | 935.52 mi (1,505.57 km) |
| Boulogne-Billancourt to Celano | 718.52 mi (1,156.35 km) |
