| Harpenden to Blumberg | 481.59 mi (775.04 km) |
| Harpenden to Bobenheim-Roxheim | 411.04 mi (661.50 km) |
| Harpenden to Bobingen | 552.22 mi (888.71 km) |
| Harpenden to Boblingen | 466.53 mi (750.81 km) |
| Harpenden to Bocholt | 297.50 mi (478.77 km) |
| Harpenden to Bochum | 325.13 mi (523.25 km) |
| Harpenden to Bockenem | 446.65 mi (718.81 km) |
| Harpenden to Bockhorn | 367.52 mi (591.47 km) |
| Harpenden to Bogen | 607.46 mi (977.62 km) |
| Harpenden to Bohl-Iggelheim | 415.44 mi (668.58 km) |
| Harpenden to Bohmte | 369.73 mi (595.03 km) |
| Harpenden to Boizenburg | 476.25 mi (766.45 km) |
| Harpenden to Bonen | 347.45 mi (559.16 km) |
| Harpenden to Bonn | 330.55 mi (531.97 km) |
| Harpenden to Bopfingen | 513.85 mi (826.97 km) |
