| Castano Primo to Bierun Stary | 571.83 mi (920.27 km) |
| Castano Primo to Bilgoraj | 730.13 mi (1,175.04 km) |
| Castano Primo to Biskupiec | 789.93 mi (1,271.27 km) |
| Castano Primo to Blachownia | 592.14 mi (952.96 km) |
| Castano Primo to Blonie | 706.33 mi (1,136.73 km) |
| Castano Primo to Bochnia | 621.41 mi (1,000.06 km) |
| Castano Primo to Bogatynia | 466.74 mi (751.15 km) |
| Castano Primo to Boguszow-Gorce | 496.81 mi (799.53 km) |
| Castano Primo to Boleslawiec | 502.83 mi (809.22 km) |
| Castano Primo to Braniewo | 781.94 mi (1,258.42 km) |
| Castano Primo to Brodnica | 714.13 mi (1,149.29 km) |
| Castano Primo to Brwinow | 707.43 mi (1,138.50 km) |
| Castano Primo to Brzeg | 543.43 mi (874.56 km) |
| Castano Primo to Brzeg Dolny | 537.28 mi (864.66 km) |
| Castano Primo to Brzesko | 628.33 mi (1,011.19 km) |
