| Boulogne-Billancourt to Campos del Puerto | 650.93 mi (1,047.57 km) |
| Boulogne-Billancourt to Canals | 696.46 mi (1,120.84 km) |
| Boulogne-Billancourt to Candelaria | 1,725.55 mi (2,777.01 km) |
| Boulogne-Billancourt to Canet de Mar | 500.79 mi (805.95 km) |
| Boulogne-Billancourt to Cangas | 699.18 mi (1,125.22 km) |
| Boulogne-Billancourt to Cangas de Narcea | 574.37 mi (924.36 km) |
| Boulogne-Billancourt to Canovellas | 498.69 mi (802.57 km) |
| Boulogne-Billancourt to Canteras | 792.67 mi (1,275.68 km) |
| Boulogne-Billancourt to Cantillana | 874.73 mi (1,407.75 km) |
| Boulogne-Billancourt to Capdepera | 633.91 mi (1,020.18 km) |
| Boulogne-Billancourt to Carballo | 651.15 mi (1,047.92 km) |
| Boulogne-Billancourt to Carcagente | 684.18 mi (1,101.08 km) |
| Boulogne-Billancourt to Cardedeu | 497.13 mi (800.06 km) |
| Boulogne-Billancourt to Carlet | 677.81 mi (1,090.83 km) |
| Boulogne-Billancourt to Carmona | 878.94 mi (1,414.52 km) |
