| Merthyr Tudful to Bois-Colombes | 316.28 mi (509.01 km) |
| Merthyr Tudful to Bois-d'Arcy | 313.51 mi (504.54 km) |
| Merthyr Tudful to Bois-Guillaume | 252.02 mi (405.59 km) |
| Merthyr Tudful to Boissy-Saint-Leger | 332.13 mi (534.52 km) |
| Merthyr Tudful to Bolbec | 225.65 mi (363.15 km) |
| Merthyr Tudful to Bollene | 637.11 mi (1,025.32 km) |
| Merthyr Tudful to Bondoufle | 334.02 mi (537.55 km) |
| Merthyr Tudful to Bondues | 289.02 mi (465.13 km) |
| Merthyr Tudful to Bondy | 324.44 mi (522.14 km) |
| Merthyr Tudful to Bonneuil-sur-Marne | 330.29 mi (531.55 km) |
| Merthyr Tudful to Bonneville | 591.00 mi (951.12 km) |
| Merthyr Tudful to Bordeaux | 493.89 mi (794.84 km) |
| Merthyr Tudful to Borgo | 872.29 mi (1,403.82 km) |
| Merthyr Tudful to Bouc-Bel-Air | 703.03 mi (1,131.42 km) |
| Merthyr Tudful to Boucau | 574.64 mi (924.79 km) |
