| Harpenden to Bierun | 851.63 mi (1,370.57 km) |
| Harpenden to Bierun Stary | 852.12 mi (1,371.36 km) |
| Harpenden to Bilgoraj | 999.43 mi (1,608.43 km) |
| Harpenden to Biskupiec | 897.39 mi (1,444.21 km) |
| Harpenden to Blachownia | 835.16 mi (1,344.06 km) |
| Harpenden to Blonie | 889.09 mi (1,430.85 km) |
| Harpenden to Bochnia | 911.37 mi (1,466.72 km) |
| Harpenden to Bogatynia | 662.22 mi (1,065.74 km) |
| Harpenden to Boguszow-Gorce | 717.30 mi (1,154.38 km) |
| Harpenden to Boleslawiec | 683.77 mi (1,100.41 km) |
| Harpenden to Braniewo | 852.80 mi (1,372.46 km) |
| Harpenden to Brodnica | 833.15 mi (1,340.82 km) |
| Harpenden to Brwinow | 893.77 mi (1,438.39 km) |
| Harpenden to Brzeg | 770.65 mi (1,240.24 km) |
| Harpenden to Brzeg Dolny | 732.92 mi (1,179.53 km) |
