| Boulogne-sur-Mer to Bastogne | 187.66 mi (302.01 km) |
| Boulogne-sur-Mer to Beauraing | 153.17 mi (246.51 km) |
| Boulogne-sur-Mer to Beernem | 80.48 mi (129.51 km) |
| Boulogne-sur-Mer to Beerse | 147.09 mi (236.72 km) |
| Boulogne-sur-Mer to Beersel | 117.80 mi (189.58 km) |
| Boulogne-sur-Mer to Begijnendijk | 139.68 mi (224.80 km) |
| Boulogne-sur-Mer to Beloeil | 93.08 mi (149.80 km) |
| Boulogne-sur-Mer to Berchem | 125.97 mi (202.72 km) |
| Boulogne-sur-Mer to Beringen | 158.44 mi (254.98 km) |
| Boulogne-sur-Mer to Berlaar | 134.92 mi (217.13 km) |
| Boulogne-sur-Mer to Berlare | 106.12 mi (170.79 km) |
| Boulogne-sur-Mer to Bernissart | 90.81 mi (146.15 km) |
| Boulogne-sur-Mer to Bertem | 131.40 mi (211.46 km) |
| Boulogne-sur-Mer to Bertrix | 171.53 mi (276.05 km) |
| Boulogne-sur-Mer to Beveren | 119.25 mi (191.91 km) |
