| Northolt to Bougival | 215.95 mi (347.53 km) |
| Northolt to Bouguenais | 307.08 mi (494.19 km) |
| Northolt to Boulogne-Billancourt | 220.05 mi (354.14 km) |
| Northolt to Boulogne-sur-Mer | 103.03 mi (165.81 km) |
| Northolt to Bourg-de-Peage | 513.79 mi (826.87 km) |
| Northolt to Bourg-en-Bresse | 447.95 mi (720.90 km) |
| Northolt to Bourg-la-Reine | 225.08 mi (362.23 km) |
| Northolt to Bourg-les-Valence | 516.00 mi (830.42 km) |
| Northolt to Bourges | 332.48 mi (535.07 km) |
| Northolt to Bourgoin-Jallieu | 485.67 mi (781.61 km) |
| Northolt to Bressuire | 325.25 mi (523.43 km) |
| Northolt to Brest | 284.68 mi (458.15 km) |
| Northolt to Bretigny-sur-Orge | 234.93 mi (378.08 km) |
| Northolt to Breuillet | 234.74 mi (377.78 km) |
| Northolt to Briancon | 560.83 mi (902.56 km) |
