| Boucau to Borsbeek | 599.01 mi (964.01 km) |
| Boucau to Boussu | 538.12 mi (866.02 km) |
| Boucau to Braine-l'Alleud | 565.66 mi (910.34 km) |
| Boucau to Braine-le-Chateau | 563.45 mi (906.78 km) |
| Boucau to Braine-le-Comte | 555.51 mi (894.01 km) |
| Boucau to Brasschaat | 604.72 mi (973.20 km) |
| Boucau to Brecht | 611.23 mi (983.67 km) |
| Boucau to Bredene | 571.89 mi (920.36 km) |
| Boucau to Bree | 620.69 mi (998.91 km) |
| Boucau to Bruges | 574.65 mi (924.81 km) |
| Boucau to Brussels | 575.07 mi (925.48 km) |
| Boucau to Buggenhout | 580.91 mi (934.89 km) |
| Boucau to Chapelle-lez-Herlaimont | 551.03 mi (886.80 km) |
| Boucau to Charleroi | 550.64 mi (886.18 km) |
| Boucau to Chatelet | 552.64 mi (889.38 km) |
