| Harrow to Belvedere Marittimo | 1,134.29 mi (1,825.46 km) |
| Harrow to Benevento | 1,016.88 mi (1,636.51 km) |
| Harrow to Bergamo | 611.13 mi (983.52 km) |
| Harrow to Bernalda | 1,118.88 mi (1,800.66 km) |
| Harrow to Bertinoro | 771.68 mi (1,241.90 km) |
| Harrow to Besana in Brianza | 597.87 mi (962.19 km) |
| Harrow to Besozzo | 569.97 mi (917.28 km) |
| Harrow to Biancavilla | 1,214.15 mi (1,953.99 km) |
| Harrow to Biassono | 600.66 mi (966.68 km) |
| Harrow to Bibbiano | 689.39 mi (1,109.47 km) |
| Harrow to Bibbiena | 783.79 mi (1,261.38 km) |
| Harrow to Biella | 565.63 mi (910.30 km) |
| Harrow to Bisceglie | 1,069.99 mi (1,721.98 km) |
| Harrow to Bisignano | 1,153.41 mi (1,856.23 km) |
| Harrow to Bitetto | 1,089.28 mi (1,753.02 km) |
