| Watford to Brie-Comte-Robert | 244.09 mi (392.82 km) |
| Watford to Brignais | 475.12 mi (764.64 km) |
| Watford to Brignoles | 644.08 mi (1,036.55 km) |
| Watford to Brive-la-Gaillarde | 457.46 mi (736.21 km) |
| Watford to Bron | 474.78 mi (764.08 km) |
| Watford to Bruay-sur-l'Escaut | 191.75 mi (308.60 km) |
| Watford to Bruges | 468.02 mi (753.20 km) |
| Watford to Brumath | 411.11 mi (661.62 km) |
| Watford to Brunoy | 241.23 mi (388.22 km) |
| Watford to Bruz | 257.93 mi (415.10 km) |
| Watford to Bry-sur-Marne | 233.24 mi (375.36 km) |
| Watford to Bully-les-Mines | 159.33 mi (256.42 km) |
| Watford to Bures-sur-Yvette | 233.59 mi (375.93 km) |
| Watford to Bussy-Saint-Georges | 237.56 mi (382.31 km) |
| Watford to Buxerolles | 351.05 mi (564.97 km) |
