| Castel Bolognese to Bierun Stary | 525.13 mi (845.12 km) |
| Castel Bolognese to Bilgoraj | 667.08 mi (1,073.57 km) |
| Castel Bolognese to Biskupiec | 777.95 mi (1,251.99 km) |
| Castel Bolognese to Blachownia | 557.41 mi (897.06 km) |
| Castel Bolognese to Blonie | 678.05 mi (1,091.21 km) |
| Castel Bolognese to Bochnia | 563.11 mi (906.23 km) |
| Castel Bolognese to Bogatynia | 478.38 mi (769.87 km) |
| Castel Bolognese to Boguszow-Gorce | 490.41 mi (789.25 km) |
| Castel Bolognese to Boleslawiec | 510.86 mi (822.15 km) |
| Castel Bolognese to Braniewo | 782.74 mi (1,259.69 km) |
| Castel Bolognese to Brodnica | 707.15 mi (1,138.05 km) |
| Castel Bolognese to Brwinow | 677.72 mi (1,090.68 km) |
| Castel Bolognese to Brzeg | 523.99 mi (843.27 km) |
| Castel Bolognese to Brzeg Dolny | 531.71 mi (855.71 km) |
| Castel Bolognese to Brzesko | 568.57 mi (915.03 km) |
