| Welwyn Garden City to Bois-Colombes | 227.14 mi (365.55 km) |
| Welwyn Garden City to Bois-d'Arcy | 229.63 mi (369.56 km) |
| Welwyn Garden City to Bois-Guillaume | 171.35 mi (275.76 km) |
| Welwyn Garden City to Boissy-Saint-Leger | 242.50 mi (390.26 km) |
| Welwyn Garden City to Bolbec | 157.08 mi (252.79 km) |
| Welwyn Garden City to Bollene | 567.57 mi (913.42 km) |
| Welwyn Garden City to Bondoufle | 248.20 mi (399.43 km) |
| Welwyn Garden City to Bondues | 161.29 mi (259.57 km) |
| Welwyn Garden City to Bondy | 232.72 mi (374.53 km) |
| Welwyn Garden City to Bonneuil-sur-Marne | 240.56 mi (387.15 km) |
| Welwyn Garden City to Bonneville | 495.70 mi (797.75 km) |
| Welwyn Garden City to Bordeaux | 481.64 mi (775.13 km) |
| Welwyn Garden City to Borgo | 781.38 mi (1,257.50 km) |
| Welwyn Garden City to Bouc-Bel-Air | 632.91 mi (1,018.58 km) |
| Welwyn Garden City to Boucau | 575.40 mi (926.02 km) |
