| Merthyr Tudful to Bierun | 981.03 mi (1,578.82 km) |
| Merthyr Tudful to Bierun Stary | 981.51 mi (1,579.60 km) |
| Merthyr Tudful to Bilgoraj | 1,128.70 mi (1,816.46 km) |
| Merthyr Tudful to Biskupiec | 1,022.20 mi (1,645.08 km) |
| Merthyr Tudful to Blachownia | 964.54 mi (1,552.28 km) |
| Merthyr Tudful to Blonie | 1,017.16 mi (1,636.96 km) |
| Merthyr Tudful to Bochnia | 1,040.79 mi (1,674.99 km) |
| Merthyr Tudful to Bogatynia | 791.64 mi (1,274.03 km) |
| Merthyr Tudful to Boguszow-Gorce | 846.72 mi (1,362.67 km) |
| Merthyr Tudful to Boleslawiec | 813.13 mi (1,308.60 km) |
| Merthyr Tudful to Braniewo | 976.18 mi (1,571.00 km) |
| Merthyr Tudful to Brodnica | 959.44 mi (1,544.07 km) |
| Merthyr Tudful to Brwinow | 1,021.91 mi (1,644.60 km) |
| Merthyr Tudful to Brzeg | 900.06 mi (1,448.50 km) |
| Merthyr Tudful to Brzeg Dolny | 862.23 mi (1,387.62 km) |
