| Boulogne-sur-Mer to Capoterra | 874.43 mi (1,407.26 km) |
| Boulogne-sur-Mer to Capriolo | 519.53 mi (836.11 km) |
| Boulogne-sur-Mer to Capua | 896.81 mi (1,443.28 km) |
| Boulogne-sur-Mer to Capurso | 990.71 mi (1,594.39 km) |
| Boulogne-sur-Mer to Carate Brianza | 488.10 mi (785.52 km) |
| Boulogne-sur-Mer to Caravaggio | 516.82 mi (831.75 km) |
| Boulogne-sur-Mer to Carbonera | 601.36 mi (967.80 km) |
| Boulogne-sur-Mer to Carbonia | 866.23 mi (1,394.06 km) |
| Boulogne-sur-Mer to Cardito | 908.06 mi (1,461.38 km) |
| Boulogne-sur-Mer to Carignano | 490.24 mi (788.96 km) |
| Boulogne-sur-Mer to Carini | 1,037.90 mi (1,670.33 km) |
| Boulogne-sur-Mer to Carlentini | 1,139.12 mi (1,833.24 km) |
| Boulogne-sur-Mer to Carmagnola | 494.70 mi (796.14 km) |
| Boulogne-sur-Mer to Carmiano | 1,066.51 mi (1,716.39 km) |
| Boulogne-sur-Mer to Carmignano | 648.78 mi (1,044.11 km) |
