| Boulder to Bahce | 6,578.12 mi (10,586.47 km) |
| Boulder to Bahcesaray | 6,671.05 mi (10,736.02 km) |
| Boulder to Balikesir | 6,190.69 mi (9,962.95 km) |
| Boulder to Balya | 6,175.07 mi (9,937.82 km) |
| Boulder to Banaz | 6,297.62 mi (10,135.04 km) |
| Boulder to Bandirma | 6,152.08 mi (9,900.81 km) |
| Boulder to Bartin | 6,199.80 mi (9,977.61 km) |
| Boulder to Baskale | 6,702.52 mi (10,786.66 km) |
| Boulder to Baskil | 6,550.81 mi (10,542.51 km) |
| Boulder to Basmakci | 6,354.35 mi (10,226.35 km) |
| Boulder to Batman | 6,648.17 mi (10,699.20 km) |
| Boulder to Battalgazi | 6,548.64 mi (10,539.02 km) |
| Boulder to Bayat | 6,309.40 mi (10,153.99 km) |
| Boulder to Bayburt | 6,479.33 mi (10,427.48 km) |
| Boulder to Bayindir | 6,264.57 mi (10,081.84 km) |
