| Merthyr Tudful to Bagnolet | 323.64 mi (520.84 km) |
| Merthyr Tudful to Bagnols-sur-Ceze | 640.50 mi (1,030.79 km) |
| Merthyr Tudful to Bailleul | 273.26 mi (439.77 km) |
| Merthyr Tudful to Balma | 605.64 mi (974.68 km) |
| Merthyr Tudful to Bar-le-Duc | 429.31 mi (690.91 km) |
| Merthyr Tudful to Barentin | 243.03 mi (391.11 km) |
| Merthyr Tudful to Basse-Goulaine | 324.37 mi (522.02 km) |
| Merthyr Tudful to Bastia | 865.15 mi (1,392.32 km) |
| Merthyr Tudful to Bayeux | 206.85 mi (332.89 km) |
| Merthyr Tudful to Bayonne | 576.98 mi (928.57 km) |
| Merthyr Tudful to Beaucaire | 661.98 mi (1,065.35 km) |
| Merthyr Tudful to Beauchamp | 309.28 mi (497.74 km) |
| Merthyr Tudful to Beaumont | 507.51 mi (816.76 km) |
| Merthyr Tudful to Beaumont-sur-Oise | 307.11 mi (494.25 km) |
| Merthyr Tudful to Beaune | 492.30 mi (792.28 km) |
