| Merthyr Tudful to Borsbeek | 340.24 mi (547.57 km) |
| Merthyr Tudful to Boussu | 324.08 mi (521.56 km) |
| Merthyr Tudful to Braine-l'Alleud | 343.19 mi (552.31 km) |
| Merthyr Tudful to Braine-le-Chateau | 338.71 mi (545.10 km) |
| Merthyr Tudful to Braine-le-Comte | 334.68 mi (538.61 km) |
| Merthyr Tudful to Brasschaat | 339.51 mi (546.39 km) |
| Merthyr Tudful to Brecht | 345.12 mi (555.42 km) |
| Merthyr Tudful to Bredene | 275.51 mi (443.40 km) |
| Merthyr Tudful to Bree | 388.01 mi (624.43 km) |
| Merthyr Tudful to Bruges | 286.41 mi (460.93 km) |
| Merthyr Tudful to Brussels | 339.52 mi (546.40 km) |
| Merthyr Tudful to Buggenhout | 330.71 mi (532.23 km) |
| Merthyr Tudful to Chapelle-lez-Herlaimont | 343.69 mi (553.12 km) |
| Merthyr Tudful to Charleroi | 351.40 mi (565.52 km) |
| Merthyr Tudful to Chatelet | 354.88 mi (571.13 km) |
