| Grenchen to Bingol | 1,752.10 mi (2,819.73 km) |
| Grenchen to Birecik | 1,703.44 mi (2,741.42 km) |
| Grenchen to Bitlis | 1,843.92 mi (2,967.50 km) |
| Grenchen to Bodrum | 1,237.51 mi (1,991.57 km) |
| Grenchen to Bogazliyan | 1,497.84 mi (2,410.53 km) |
| Grenchen to Bolu | 1,277.70 mi (2,056.26 km) |
| Grenchen to Bolvadin | 1,324.65 mi (2,131.82 km) |
| Grenchen to Bor | 1,515.12 mi (2,438.34 km) |
| Grenchen to Borcka | 1,728.12 mi (2,781.14 km) |
| Grenchen to Boyabat | 1,401.46 mi (2,255.44 km) |
| Grenchen to Bozdogan | 1,246.99 mi (2,006.84 km) |
| Grenchen to Bozkir | 1,438.77 mi (2,315.47 km) |
| Grenchen to Bozkurt | 1,297.36 mi (2,087.90 km) |
| Grenchen to Bozuyuk | 1,234.60 mi (1,986.90 km) |
| Grenchen to Bucak | 1,354.97 mi (2,180.62 km) |
