| Towcester to Bilecik | 1,679.98 mi (2,703.66 km) |
| Towcester to Bingol | 2,169.98 mi (3,492.24 km) |
| Towcester to Birecik | 2,147.73 mi (3,456.43 km) |
| Towcester to Bitlis | 2,258.56 mi (3,634.80 km) |
| Towcester to Bodrum | 1,725.75 mi (2,777.33 km) |
| Towcester to Bogazliyan | 1,937.55 mi (3,118.18 km) |
| Towcester to Bolu | 1,720.70 mi (2,769.20 km) |
| Towcester to Bolvadin | 1,787.65 mi (2,876.94 km) |
| Towcester to Bor | 1,968.44 mi (3,167.89 km) |
| Towcester to Borcka | 2,116.66 mi (3,406.44 km) |
| Towcester to Boyabat | 1,821.51 mi (2,931.43 km) |
| Towcester to Bozdogan | 1,728.59 mi (2,781.90 km) |
| Towcester to Bozkir | 1,907.05 mi (3,069.10 km) |
| Towcester to Bozkurt | 1,772.77 mi (2,853.00 km) |
| Towcester to Bozuyuk | 1,692.77 mi (2,724.25 km) |
