| Cities | Distance |
|---|---|
| Harpenden to Celbridge | 280.07 mi (450.73 km) |
| Harpenden to Clondalkin | 274.06 mi (441.06 km) |
| Harpenden to Clonmel | 314.50 mi (506.13 km) |
| Harpenden to Cobh | 339.02 mi (545.61 km) |
| Harpenden to Cork | 346.27 mi (557.27 km) |
| Harpenden to Donegal | 375.62 mi (604.51 km) |
| Harpenden to Douglas | 344.87 mi (555.02 km) |
| Harpenden to Drogheda | 282.91 mi (455.30 km) |
| Harpenden to Dublin | 269.57 mi (433.83 km) |
| Harpenden to Dun Dealgan | 294.00 mi (473.14 km) |
| Harpenden to Ennis | 370.93 mi (596.96 km) |
| Harpenden to Enniscorthy | 267.49 mi (430.49 km) |
| Harpenden to Finglas | 270.74 mi (435.72 km) |
| Harpenden to Galway | 378.71 mi (609.47 km) |
| Harpenden to Glanmire | 343.24 mi (552.39 km) |