| Cities | Distance |
|---|---|
| Harpenden to Ayr | 306.40 mi (493.11 km) |
| Harpenden to Bacup | 151.48 mi (243.79 km) |
| Harpenden to Baguley | 135.84 mi (218.61 km) |
| Harpenden to Baildon | 152.33 mi (245.15 km) |
| Harpenden to Bailleston | 317.79 mi (511.44 km) |
| Harpenden to Balderton | 87.31 mi (140.51 km) |
| Harpenden to Baldock | 13.78 mi (22.18 km) |
| Harpenden to Balham | 27.23 mi (43.83 km) |
| Harpenden to Bamber Bridge | 163.49 mi (263.11 km) |
| Harpenden to Banbridge | 300.78 mi (484.06 km) |
| Harpenden to Banbury | 45.15 mi (72.66 km) |
| Harpenden to Bangor | 294.68 mi (474.25 km) |
| Harpenden to Bangor | 186.22 mi (299.69 km) |
| Harpenden to Banstead | 34.82 mi (56.04 km) |
| Harpenden to Bargoed | 123.81 mi (199.26 km) |