| Cities | Distance |
|---|---|
| Harpenden to Aberaman | 132.00 mi (212.43 km) |
| Harpenden to Aberbargoed | 123.09 mi (198.09 km) |
| Harpenden to Aberdare | 132.43 mi (213.12 km) |
| Harpenden to Aberdeen | 375.10 mi (603.67 km) |
| Harpenden to Abergavenny | 113.78 mi (183.11 km) |
| Harpenden to Abergele | 169.09 mi (272.12 km) |
| Harpenden to Abertawe | 154.61 mi (248.82 km) |
| Harpenden to Abertillery | 118.90 mi (191.35 km) |
| Harpenden to Aberystwyth | 163.46 mi (263.06 km) |
| Harpenden to Abingdon | 41.15 mi (66.22 km) |
| Harpenden to Abram | 149.72 mi (240.94 km) |
| Harpenden to Accrington | 157.96 mi (254.21 km) |
| Harpenden to Acomb | 151.17 mi (243.28 km) |
| Harpenden to Acton | 21.29 mi (34.27 km) |
| Harpenden to Addlestone | 31.51 mi (50.72 km) |