| Caerfyrddin to Bagnolet | 361.28 mi (581.42 km) |
| Caerfyrddin to Bagnols-sur-Ceze | 672.15 mi (1,081.72 km) |
| Caerfyrddin to Bailleul | 314.09 mi (505.48 km) |
| Caerfyrddin to Balma | 630.06 mi (1,013.99 km) |
| Caerfyrddin to Bar-le-Duc | 469.06 mi (754.89 km) |
| Caerfyrddin to Barentin | 280.41 mi (451.27 km) |
| Caerfyrddin to Basse-Goulaine | 345.11 mi (555.40 km) |
| Caerfyrddin to Bastia | 900.81 mi (1,449.71 km) |
| Caerfyrddin to Bayeux | 238.36 mi (383.60 km) |
| Caerfyrddin to Bayonne | 592.78 mi (953.99 km) |
| Caerfyrddin to Beaucaire | 693.14 mi (1,115.50 km) |
| Caerfyrddin to Beauchamp | 346.99 mi (558.42 km) |
| Caerfyrddin to Beaumont | 539.12 mi (867.62 km) |
| Caerfyrddin to Beaumont-sur-Oise | 345.27 mi (555.65 km) |
| Caerfyrddin to Beaune | 529.05 mi (851.43 km) |
