| Boulogne-Billancourt to Cervello | 514.17 mi (827.47 km) |
| Boulogne-Billancourt to Cervera | 497.59 mi (800.80 km) |
| Boulogne-Billancourt to Ceuti | 763.57 mi (1,228.84 km) |
| Boulogne-Billancourt to Cheste | 662.33 mi (1,065.92 km) |
| Boulogne-Billancourt to Chiclana de la Frontera | 956.82 mi (1,539.86 km) |
| Boulogne-Billancourt to Chipiona | 943.34 mi (1,518.16 km) |
| Boulogne-Billancourt to Chiva | 663.27 mi (1,067.44 km) |
| Boulogne-Billancourt to Churriana de la Vega | 859.84 mi (1,383.78 km) |
| Boulogne-Billancourt to Ciempozuelos | 664.88 mi (1,070.03 km) |
| Boulogne-Billancourt to Cieza | 754.47 mi (1,214.21 km) |
| Boulogne-Billancourt to Cisterniga | 601.34 mi (967.77 km) |
| Boulogne-Billancourt to Ciudad de Melilla | 972.89 mi (1,565.72 km) |
| Boulogne-Billancourt to Ciudad Real | 745.91 mi (1,200.43 km) |
| Boulogne-Billancourt to Ciudad-Rodrigo | 713.02 mi (1,147.49 km) |
| Boulogne-Billancourt to Cocentaina | 709.75 mi (1,142.24 km) |
