| Harpenden to Beocin | 1,022.24 mi (1,645.13 km) |
| Harpenden to Blace | 1,161.83 mi (1,869.79 km) |
| Harpenden to Bogatic | 1,026.49 mi (1,651.98 km) |
| Harpenden to Bojnik | 1,190.81 mi (1,916.42 km) |
| Harpenden to Boljevac | 1,166.26 mi (1,876.92 km) |
| Harpenden to Bor | 1,160.09 mi (1,866.98 km) |
| Harpenden to Borca | 1,064.00 mi (1,712.34 km) |
| Harpenden to Bosilegrad | 1,242.88 mi (2,000.23 km) |
| Harpenden to Brus | 1,147.93 mi (1,847.42 km) |
| Harpenden to Bujanovac | 1,216.55 mi (1,957.85 km) |
| Harpenden to Cacak | 1,099.44 mi (1,769.37 km) |
| Harpenden to Cajetina | 1,080.41 mi (1,738.75 km) |
| Harpenden to Cicevac | 1,150.54 mi (1,851.62 km) |
| Harpenden to Coka | 1,012.07 mi (1,628.77 km) |
| Harpenden to Crna Trava | 1,222.61 mi (1,967.60 km) |
