| Mason City to Bierun | 4,813.59 mi (7,746.73 km) |
| Mason City to Bierun Stary | 4,815.46 mi (7,749.73 km) |
| Mason City to Bilgoraj | 4,906.51 mi (7,896.27 km) |
| Mason City to Biskupiec | 4,691.44 mi (7,550.15 km) |
| Mason City to Blachownia | 4,778.26 mi (7,689.87 km) |
| Mason City to Blonie | 4,761.31 mi (7,662.58 km) |
| Mason City to Bochnia | 4,863.11 mi (7,826.43 km) |
| Mason City to Bogatynia | 4,643.47 mi (7,472.94 km) |
| Mason City to Boguszow-Gorce | 4,690.44 mi (7,548.54 km) |
| Mason City to Boleslawiec | 4,646.90 mi (7,478.46 km) |
| Mason City to Braniewo | 4,633.60 mi (7,457.06 km) |
| Mason City to Brodnica | 4,673.76 mi (7,521.68 km) |
| Mason City to Brwinow | 4,767.15 mi (7,671.99 km) |
| Mason City to Brzeg | 4,727.15 mi (7,607.61 km) |
| Mason City to Brzeg Dolny | 4,683.88 mi (7,537.97 km) |
