| Boulogne-Billancourt to Casandrino | 800.56 mi (1,288.38 km) |
| Boulogne-Billancourt to Casapulla | 795.04 mi (1,279.49 km) |
| Boulogne-Billancourt to Casarano | 991.00 mi (1,594.87 km) |
| Boulogne-Billancourt to Casatenovo | 395.83 mi (637.03 km) |
| Boulogne-Billancourt to Casciana Terme | 542.65 mi (873.30 km) |
| Boulogne-Billancourt to Cascina | 532.60 mi (857.14 km) |
| Boulogne-Billancourt to Caselle Torinese | 358.62 mi (577.15 km) |
| Boulogne-Billancourt to Caserta | 796.83 mi (1,282.38 km) |
| Boulogne-Billancourt to Casier | 520.10 mi (837.02 km) |
| Boulogne-Billancourt to Casorate Primo | 400.68 mi (644.84 km) |
| Boulogne-Billancourt to Casoria | 804.03 mi (1,293.96 km) |
| Boulogne-Billancourt to Cassano al Ionio | 932.95 mi (1,501.44 km) |
| Boulogne-Billancourt to Cassano d'Adda | 410.55 mi (660.72 km) |
| Boulogne-Billancourt to Cassano delle Murge | 896.33 mi (1,442.50 km) |
| Boulogne-Billancourt to Cassina de' Pecchi | 405.41 mi (652.45 km) |
