| Porsgrunn to Bierun Stary | 726.42 mi (1,169.07 km) |
| Porsgrunn to Bilgoraj | 783.94 mi (1,261.63 km) |
| Porsgrunn to Biskupiec | 560.77 mi (902.48 km) |
| Porsgrunn to Blachownia | 681.52 mi (1,096.80 km) |
| Porsgrunn to Blonie | 638.00 mi (1,026.76 km) |
| Porsgrunn to Bochnia | 761.40 mi (1,225.36 km) |
| Porsgrunn to Bogatynia | 603.61 mi (971.41 km) |
| Porsgrunn to Boguszow-Gorce | 631.05 mi (1,015.58 km) |
| Porsgrunn to Boleslawiec | 588.92 mi (947.77 km) |
| Porsgrunn to Braniewo | 503.05 mi (809.57 km) |
| Porsgrunn to Brodnica | 548.84 mi (883.28 km) |
| Porsgrunn to Brwinow | 643.77 mi (1,036.04 km) |
| Porsgrunn to Brzeg | 646.93 mi (1,041.13 km) |
| Porsgrunn to Brzeg Dolny | 607.71 mi (978.02 km) |
| Porsgrunn to Brzesko | 766.49 mi (1,233.55 km) |
