| Welwyn Garden City to Bierun | 844.83 mi (1,359.62 km) |
| Welwyn Garden City to Bierun Stary | 845.32 mi (1,360.41 km) |
| Welwyn Garden City to Bilgoraj | 992.70 mi (1,597.60 km) |
| Welwyn Garden City to Biskupiec | 891.14 mi (1,434.15 km) |
| Welwyn Garden City to Blachownia | 828.40 mi (1,333.19 km) |
| Welwyn Garden City to Blonie | 882.53 mi (1,420.29 km) |
| Welwyn Garden City to Bochnia | 904.58 mi (1,455.78 km) |
| Welwyn Garden City to Bogatynia | 655.43 mi (1,054.81 km) |
| Welwyn Garden City to Boguszow-Gorce | 710.51 mi (1,143.45 km) |
| Welwyn Garden City to Boleslawiec | 677.02 mi (1,089.55 km) |
| Welwyn Garden City to Braniewo | 846.68 mi (1,362.60 km) |
| Welwyn Garden City to Brodnica | 826.77 mi (1,330.55 km) |
| Welwyn Garden City to Brwinow | 887.20 mi (1,427.82 km) |
| Welwyn Garden City to Brzeg | 763.88 mi (1,229.35 km) |
| Welwyn Garden City to Brzeg Dolny | 726.19 mi (1,168.69 km) |
