| Harpenden to Wodzislaw Slaski | 826.35 mi (1,329.89 km) |
| Harpenden to Wolomin | 914.53 mi (1,471.79 km) |
| Harpenden to Wolow | 728.18 mi (1,171.90 km) |
| Harpenden to Wolsztyn | 699.88 mi (1,126.35 km) |
| Harpenden to Wroclaw | 748.16 mi (1,204.04 km) |
| Harpenden to Wronki | 708.79 mi (1,140.69 km) |
| Harpenden to Wrzesnia | 760.54 mi (1,223.98 km) |
| Harpenden to Wschowa | 710.54 mi (1,143.51 km) |
| Harpenden to Wysokie Mazowieckie | 963.57 mi (1,550.72 km) |
| Harpenden to Wyszkow | 921.55 mi (1,483.09 km) |
| Harpenden to Zabki | 909.35 mi (1,463.46 km) |
| Harpenden to Zabkowice Slaskie | 746.43 mi (1,201.26 km) |
| Harpenden to Zabrze | 834.86 mi (1,343.58 km) |
| Harpenden to Zagan | 669.59 mi (1,077.60 km) |
| Harpenden to Zakopane | 904.85 mi (1,456.21 km) |
