| Merthyr Tudful to Beyne-Heusay | 398.42 mi (641.20 km) |
| Merthyr Tudful to Bierbeek | 357.31 mi (575.04 km) |
| Merthyr Tudful to Bilzen | 388.70 mi (625.55 km) |
| Merthyr Tudful to Binche | 340.26 mi (547.60 km) |
| Merthyr Tudful to Bissegem | 292.00 mi (469.93 km) |
| Merthyr Tudful to Blankenberge | 280.79 mi (451.89 km) |
| Merthyr Tudful to Blegny | 401.09 mi (645.50 km) |
| Merthyr Tudful to Bocholt | 387.39 mi (623.45 km) |
| Merthyr Tudful to Boechout | 340.82 mi (548.50 km) |
| Merthyr Tudful to Bonheiden | 344.44 mi (554.33 km) |
| Merthyr Tudful to Boom | 336.68 mi (541.83 km) |
| Merthyr Tudful to Boortmeerbeek | 346.56 mi (557.73 km) |
| Merthyr Tudful to Borgerhout | 338.29 mi (544.43 km) |
| Merthyr Tudful to Borgloon | 382.31 mi (615.26 km) |
| Merthyr Tudful to Bornem | 330.78 mi (532.33 km) |
