| Irthlingborough to Bierun | 863.48 mi (1,389.63 km) |
| Irthlingborough to Bierun Stary | 864.09 mi (1,390.63 km) |
| Irthlingborough to Bilgoraj | 1,008.56 mi (1,623.12 km) |
| Irthlingborough to Biskupiec | 898.15 mi (1,445.43 km) |
| Irthlingborough to Blachownia | 845.27 mi (1,360.33 km) |
| Irthlingborough to Blonie | 894.63 mi (1,439.77 km) |
| Irthlingborough to Bochnia | 922.94 mi (1,485.33 km) |
| Irthlingborough to Bogatynia | 673.82 mi (1,084.41 km) |
| Irthlingborough to Boguszow-Gorce | 728.74 mi (1,172.80 km) |
| Irthlingborough to Boleslawiec | 693.82 mi (1,116.59 km) |
| Irthlingborough to Braniewo | 852.03 mi (1,371.21 km) |
| Irthlingborough to Brodnica | 835.77 mi (1,345.05 km) |
| Irthlingborough to Brwinow | 899.45 mi (1,447.53 km) |
| Irthlingborough to Brzeg | 781.17 mi (1,257.17 km) |
| Irthlingborough to Brzeg Dolny | 742.49 mi (1,194.92 km) |
