| Boulogne-Billancourt to Cartagena | 792.86 mi (1,275.99 km) |
| Boulogne-Billancourt to Cartama | 906.35 mi (1,458.62 km) |
| Boulogne-Billancourt to Cartaya | 926.72 mi (1,491.41 km) |
| Boulogne-Billancourt to Caspe | 536.78 mi (863.87 km) |
| Boulogne-Billancourt to Cassa de la Selva | 480.89 mi (773.92 km) |
| Boulogne-Billancourt to Castalla | 722.05 mi (1,162.03 km) |
| Boulogne-Billancourt to Castellbisbal | 508.58 mi (818.48 km) |
| Boulogne-Billancourt to Castelldefels | 522.17 mi (840.35 km) |
| Boulogne-Billancourt to Castello de Ampurias | 456.21 mi (734.19 km) |
| Boulogne-Billancourt to Castellon de la Plana | 621.76 mi (1,000.62 km) |
| Boulogne-Billancourt to Castilleja de la Cuesta | 893.71 mi (1,438.28 km) |
| Boulogne-Billancourt to Catarroja | 664.68 mi (1,069.70 km) |
| Boulogne-Billancourt to Catral | 753.09 mi (1,211.98 km) |
| Boulogne-Billancourt to Caudete | 718.09 mi (1,155.66 km) |
| Boulogne-Billancourt to Cehegin | 769.10 mi (1,237.75 km) |
