| Harpenden to Bad Homburg | 404.24 mi (650.56 km) |
| Harpenden to Bad Honnef am Rhein | 337.60 mi (543.32 km) |
| Harpenden to Bad Iburg | 357.97 mi (576.10 km) |
| Harpenden to Bad Kissingen | 466.09 mi (750.10 km) |
| Harpenden to Bad Konig | 433.12 mi (697.04 km) |
| Harpenden to Bad Kreuznach | 383.29 mi (616.85 km) |
| Harpenden to Bad Krozingen | 448.18 mi (721.27 km) |
| Harpenden to Bad Laasphe | 382.91 mi (616.23 km) |
| Harpenden to Bad Laer | 359.75 mi (578.95 km) |
| Harpenden to Bad Langensalza | 475.54 mi (765.32 km) |
| Harpenden to Bad Lauchstadt | 523.38 mi (842.30 km) |
| Harpenden to Bad Lauterberg | 462.97 mi (745.08 km) |
| Harpenden to Bad Liebenwerda | 588.83 mi (947.63 km) |
| Harpenden to Bad Liebenzell | 452.29 mi (727.90 km) |
| Harpenden to Bad Lippspringe | 391.52 mi (630.09 km) |
