| Harrow Weald to Bougival | 218.63 mi (351.85 km) |
| Harrow Weald to Bouguenais | 311.22 mi (500.86 km) |
| Harrow Weald to Boulogne-Billancourt | 222.69 mi (358.39 km) |
| Harrow Weald to Boulogne-sur-Mer | 104.12 mi (167.56 km) |
| Harrow Weald to Bourg-de-Peage | 516.51 mi (831.24 km) |
| Harrow Weald to Bourg-en-Bresse | 450.34 mi (724.75 km) |
| Harrow Weald to Bourg-la-Reine | 227.71 mi (366.46 km) |
| Harrow Weald to Bourg-les-Valence | 518.78 mi (834.89 km) |
| Harrow Weald to Bourges | 335.61 mi (540.12 km) |
| Harrow Weald to Bourgoin-Jallieu | 488.20 mi (785.69 km) |
| Harrow Weald to Bressuire | 329.23 mi (529.84 km) |
| Harrow Weald to Brest | 288.53 mi (464.34 km) |
| Harrow Weald to Bretigny-sur-Orge | 237.64 mi (382.44 km) |
| Harrow Weald to Breuillet | 237.54 mi (382.29 km) |
| Harrow Weald to Briancon | 563.16 mi (906.31 km) |
