| Harrow Weald to Bilecik | 1,642.78 mi (2,643.80 km) |
| Harrow Weald to Bingol | 2,137.34 mi (3,439.71 km) |
| Harrow Weald to Birecik | 2,112.29 mi (3,399.40 km) |
| Harrow Weald to Bitlis | 2,226.34 mi (3,582.95 km) |
| Harrow Weald to Bodrum | 1,684.92 mi (2,711.61 km) |
| Harrow Weald to Bogazliyan | 1,902.40 mi (3,061.61 km) |
| Harrow Weald to Bolu | 1,684.95 mi (2,711.67 km) |
| Harrow Weald to Bolvadin | 1,749.85 mi (2,816.12 km) |
| Harrow Weald to Bor | 1,931.87 mi (3,109.04 km) |
| Harrow Weald to Borcka | 2,086.90 mi (3,358.55 km) |
| Harrow Weald to Boyabat | 1,788.21 mi (2,877.85 km) |
| Harrow Weald to Bozdogan | 1,688.60 mi (2,717.55 km) |
| Harrow Weald to Bozkir | 1,868.76 mi (3,007.48 km) |
| Harrow Weald to Bozkurt | 1,733.56 mi (2,789.89 km) |
| Harrow Weald to Bozuyuk | 1,655.41 mi (2,664.12 km) |
