| Harlow to Bougival | 220.00 mi (354.06 km) |
| Harlow to Bouguenais | 327.46 mi (527.00 km) |
| Harlow to Boulogne-Billancourt | 223.72 mi (360.05 km) |
| Harlow to Boulogne-sur-Mer | 97.07 mi (156.21 km) |
| Harlow to Bourg-de-Peage | 517.31 mi (832.52 km) |
| Harlow to Bourg-en-Bresse | 448.93 mi (722.49 km) |
| Harlow to Bourg-la-Reine | 228.61 mi (367.91 km) |
| Harlow to Bourg-les-Valence | 520.00 mi (836.86 km) |
| Harlow to Bourges | 339.96 mi (547.11 km) |
| Harlow to Bourgoin-Jallieu | 487.75 mi (784.96 km) |
| Harlow to Bressuire | 342.38 mi (551.00 km) |
| Harlow to Brest | 310.92 mi (500.37 km) |
| Harlow to Bretigny-sur-Orge | 239.09 mi (384.79 km) |
| Harlow to Breuillet | 239.68 mi (385.72 km) |
| Harlow to Briancon | 561.19 mi (903.14 km) |
