| Seia to Bierun | 1,454.67 mi (2,341.07 km) |
| Seia to Bierun Stary | 1,453.48 mi (2,339.15 km) |
| Seia to Bilgoraj | 1,616.74 mi (2,601.89 km) |
| Seia to Biskupiec | 1,618.71 mi (2,605.06 km) |
| Seia to Blachownia | 1,463.00 mi (2,354.47 km) |
| Seia to Blonie | 1,562.61 mi (2,514.78 km) |
| Seia to Bochnia | 1,508.60 mi (2,427.86 km) |
| Seia to Bogatynia | 1,303.87 mi (2,098.38 km) |
| Seia to Boguszow-Gorce | 1,349.58 mi (2,171.95 km) |
| Seia to Boleslawiec | 1,338.35 mi (2,153.87 km) |
| Seia to Braniewo | 1,591.85 mi (2,561.83 km) |
| Seia to Brodnica | 1,542.82 mi (2,482.93 km) |
| Seia to Brwinow | 1,565.22 mi (2,518.98 km) |
| Seia to Brzeg | 1,404.14 mi (2,259.74 km) |
| Seia to Brzeg Dolny | 1,384.02 mi (2,227.36 km) |
