| Belfast to Bierun | 1,093.50 mi (1,759.82 km) |
| Belfast to Bierun Stary | 1,094.54 mi (1,761.49 km) |
| Belfast to Bilgoraj | 1,226.40 mi (1,973.69 km) |
| Belfast to Biskupiec | 1,080.77 mi (1,739.33 km) |
| Belfast to Blachownia | 1,069.22 mi (1,720.75 km) |
| Belfast to Blonie | 1,099.33 mi (1,769.20 km) |
| Belfast to Bochnia | 1,151.17 mi (1,852.63 km) |
| Belfast to Bogatynia | 906.08 mi (1,458.20 km) |
| Belfast to Boguszow-Gorce | 959.45 mi (1,544.09 km) |
| Belfast to Boleslawiec | 920.35 mi (1,481.16 km) |
| Belfast to Braniewo | 1,028.25 mi (1,654.81 km) |
| Belfast to Brodnica | 1,028.79 mi (1,655.68 km) |
| Belfast to Brwinow | 1,104.66 mi (1,777.77 km) |
| Belfast to Brzeg | 1,007.70 mi (1,621.74 km) |
| Belfast to Brzeg Dolny | 966.26 mi (1,555.05 km) |
