| Harpenden to Albenga | 666.40 mi (1,072.47 km) |
| Harpenden to Alberobello | 1,128.57 mi (1,816.26 km) |
| Harpenden to Albignasego | 713.67 mi (1,148.55 km) |
| Harpenden to Albinea | 706.93 mi (1,137.69 km) |
| Harpenden to Albino | 622.33 mi (1,001.54 km) |
| Harpenden to Alcamo | 1,153.24 mi (1,855.95 km) |
| Harpenden to Alessandria | 629.02 mi (1,012.30 km) |
| Harpenden to Alfonsine | 761.29 mi (1,225.18 km) |
| Harpenden to Alghero | 879.97 mi (1,416.17 km) |
| Harpenden to Alpignano | 587.02 mi (944.72 km) |
| Harpenden to Altamura | 1,103.29 mi (1,775.58 km) |
| Harpenden to Altavilla Vicentina | 691.06 mi (1,112.16 km) |
| Harpenden to Altofonte | 1,158.08 mi (1,863.75 km) |
| Harpenden to Altopascio | 751.88 mi (1,210.03 km) |
| Harpenden to Alzano Lombardo | 621.48 mi (1,000.18 km) |
