| Iowa City to Bierun | 4,839.12 mi (7,787.81 km) |
| Iowa City to Bierun Stary | 4,840.90 mi (7,790.67 km) |
| Iowa City to Bilgoraj | 4,936.66 mi (7,944.79 km) |
| Iowa City to Biskupiec | 4,725.53 mi (7,605.01 km) |
| Iowa City to Blachownia | 4,804.82 mi (7,732.60 km) |
| Iowa City to Blonie | 4,792.09 mi (7,712.13 km) |
| Iowa City to Bochnia | 4,889.81 mi (7,869.38 km) |
| Iowa City to Bogatynia | 4,666.11 mi (7,509.38 km) |
| Iowa City to Boguszow-Gorce | 4,714.09 mi (7,586.60 km) |
| Iowa City to Boleslawiec | 4,670.84 mi (7,517.00 km) |
| Iowa City to Braniewo | 4,667.52 mi (7,511.65 km) |
| Iowa City to Brodnica | 4,705.21 mi (7,572.31 km) |
| Iowa City to Brwinow | 4,797.94 mi (7,721.53 km) |
| Iowa City to Brzeg | 4,752.31 mi (7,648.10 km) |
| Iowa City to Brzeg Dolny | 4,709.00 mi (7,578.40 km) |
