| Caerfyrddin to Bois-Colombes | 353.84 mi (569.46 km) |
| Caerfyrddin to Bois-d'Arcy | 350.41 mi (563.93 km) |
| Caerfyrddin to Bois-Guillaume | 289.44 mi (465.81 km) |
| Caerfyrddin to Boissy-Saint-Leger | 369.60 mi (594.81 km) |
| Caerfyrddin to Bolbec | 262.18 mi (421.94 km) |
| Caerfyrddin to Bollene | 669.14 mi (1,076.87 km) |
| Caerfyrddin to Bondoufle | 370.95 mi (596.99 km) |
| Caerfyrddin to Bondues | 329.85 mi (530.84 km) |
| Caerfyrddin to Bondy | 362.24 mi (582.97 km) |
| Caerfyrddin to Bonneuil-sur-Marne | 367.78 mi (591.89 km) |
| Caerfyrddin to Bonneville | 627.88 mi (1,010.48 km) |
| Caerfyrddin to Bordeaux | 514.04 mi (827.27 km) |
| Caerfyrddin to Borgo | 907.79 mi (1,460.94 km) |
| Caerfyrddin to Bouc-Bel-Air | 734.91 mi (1,182.72 km) |
| Caerfyrddin to Boucau | 590.44 mi (950.22 km) |
