| Boucau to Cabries | 344.18 mi (553.91 km) |
| Boucau to Cachan | 407.18 mi (655.29 km) |
| Boucau to Caen | 394.42 mi (634.76 km) |
| Boucau to Cagnes-sur-Mer | 432.04 mi (695.31 km) |
| Boucau to Cahors | 158.90 mi (255.72 km) |
| Boucau to Calais | 536.27 mi (863.05 km) |
| Boucau to Caluire-et-Cuire | 348.48 mi (560.82 km) |
| Boucau to Cambrai | 510.73 mi (821.93 km) |
| Boucau to Canet-en-Roussillon | 233.57 mi (375.89 km) |
| Boucau to Cannes | 425.54 mi (684.84 km) |
| Boucau to Canteleu | 426.71 mi (686.72 km) |
| Boucau to Capbreton | 8.62 mi (13.87 km) |
| Boucau to Carcassonne | 193.91 mi (312.07 km) |
| Boucau to Carmaux | 185.38 mi (298.34 km) |
| Boucau to Carpentras | 327.96 mi (527.80 km) |
