| Castro Daire to Bierun | 1,445.13 mi (2,325.71 km) |
| Castro Daire to Bierun Stary | 1,444.00 mi (2,323.90 km) |
| Castro Daire to Bilgoraj | 1,607.50 mi (2,587.01 km) |
| Castro Daire to Biskupiec | 1,604.37 mi (2,581.99 km) |
| Castro Daire to Blachownia | 1,452.40 mi (2,337.41 km) |
| Castro Daire to Blonie | 1,550.44 mi (2,495.19 km) |
| Castro Daire to Bochnia | 1,499.66 mi (2,413.47 km) |
| Castro Daire to Bogatynia | 1,291.51 mi (2,078.49 km) |
| Castro Daire to Boguszow-Gorce | 1,338.00 mi (2,153.30 km) |
| Castro Daire to Boleslawiec | 1,325.69 mi (2,133.50 km) |
| Castro Daire to Braniewo | 1,576.46 mi (2,537.06 km) |
| Castro Daire to Brodnica | 1,528.76 mi (2,460.30 km) |
| Castro Daire to Brwinow | 1,553.16 mi (2,499.56 km) |
| Castro Daire to Brzeg | 1,392.89 mi (2,241.64 km) |
| Castro Daire to Brzeg Dolny | 1,371.84 mi (2,207.76 km) |
