| Harpenden to Annaberg-Buchholz | 583.63 mi (939.26 km) |
| Harpenden to Anrochte | 372.19 mi (598.98 km) |
| Harpenden to Ansbach | 509.95 mi (820.69 km) |
| Harpenden to Apen | 356.38 mi (573.53 km) |
| Harpenden to Apolda | 513.84 mi (826.95 km) |
| Harpenden to Appenweier | 432.30 mi (695.71 km) |
| Harpenden to Arnsberg | 363.07 mi (584.30 km) |
| Harpenden to Arnstadt | 492.03 mi (791.85 km) |
| Harpenden to Aschaffenburg | 433.07 mi (696.95 km) |
| Harpenden to Ascheberg | 340.46 mi (547.91 km) |
| Harpenden to Aschersleben | 504.65 mi (812.16 km) |
| Harpenden to Aschheim | 591.34 mi (951.67 km) |
| Harpenden to Asperg | 463.71 mi (746.27 km) |
| Harpenden to Asslar | 390.95 mi (629.18 km) |
| Harpenden to Attendorn | 358.29 mi (576.61 km) |
