| Harpenden to Boppard | 361.96 mi (582.52 km) |
| Harpenden to Borgentreich | 411.34 mi (661.98 km) |
| Harpenden to Borgholzhausen | 368.69 mi (593.35 km) |
| Harpenden to Borken | 308.16 mi (495.93 km) |
| Harpenden to Borna | 554.59 mi (892.52 km) |
| Harpenden to Bornheim | 326.07 mi (524.75 km) |
| Harpenden to Bosel | 359.36 mi (578.34 km) |
| Harpenden to Bottrop | 312.27 mi (502.54 km) |
| Harpenden to Bovenden | 439.87 mi (707.90 km) |
| Harpenden to Brackenheim | 454.98 mi (732.21 km) |
| Harpenden to Brake | 385.22 mi (619.94 km) |
| Harpenden to Brakel | 407.51 mi (655.82 km) |
| Harpenden to Bramsche | 355.80 mi (572.61 km) |
| Harpenden to Brand | 291.06 mi (468.42 km) |
| Harpenden to Brand-Erbisdorf | 592.91 mi (954.20 km) |
