| Boulogne-sur-Mer to Cesa | 905.02 mi (1,456.49 km) |
| Boulogne-sur-Mer to Cesano Maderno | 493.83 mi (794.75 km) |
| Boulogne-sur-Mer to Cesena | 672.58 mi (1,082.42 km) |
| Boulogne-sur-Mer to Cesenatico | 674.71 mi (1,085.83 km) |
| Boulogne-sur-Mer to Cetraro | 1,040.51 mi (1,674.54 km) |
| Boulogne-sur-Mer to Cherasco | 510.30 mi (821.25 km) |
| Boulogne-sur-Mer to Chiampo | 570.75 mi (918.53 km) |
| Boulogne-sur-Mer to Chiaravalle | 737.01 mi (1,186.10 km) |
| Boulogne-sur-Mer to Chiari | 523.68 mi (842.79 km) |
| Boulogne-sur-Mer to Chiavari | 570.18 mi (917.62 km) |
| Boulogne-sur-Mer to Chieri | 488.06 mi (785.46 km) |
| Boulogne-sur-Mer to Chieti | 829.06 mi (1,334.24 km) |
| Boulogne-sur-Mer to Chioggia | 621.96 mi (1,000.95 km) |
| Boulogne-sur-Mer to Chiusi | 721.21 mi (1,160.68 km) |
| Boulogne-sur-Mer to Chivasso | 479.74 mi (772.07 km) |
