| Harrow to Barberino di Mugello | 749.10 mi (1,205.56 km) |
| Harrow to Barcellona-Pozzo di Gotto | 1,195.80 mi (1,924.46 km) |
| Harrow to Bareggio | 599.85 mi (965.37 km) |
| Harrow to Barga | 720.64 mi (1,159.76 km) |
| Harrow to Bari | 1,088.69 mi (1,752.07 km) |
| Harrow to Barletta | 1,058.46 mi (1,703.43 km) |
| Harrow to Baronissi | 1,037.18 mi (1,669.19 km) |
| Harrow to Barrafranca | 1,211.43 mi (1,949.60 km) |
| Harrow to Bassano del Grappa | 680.74 mi (1,095.55 km) |
| Harrow to Battipaglia | 1,051.14 mi (1,691.65 km) |
| Harrow to Beinasco | 581.29 mi (935.49 km) |
| Harrow to Bellinzago Novarese | 582.57 mi (937.56 km) |
| Harrow to Belluno | 682.35 mi (1,098.13 km) |
| Harrow to Belmonte Mezzagno | 1,147.94 mi (1,847.42 km) |
| Harrow to Belpasso | 1,221.48 mi (1,965.78 km) |
