| Harpenden to Wymondham | 81.06 mi (130.45 km) |
| Harpenden to Wythenshawe | 135.15 mi (217.51 km) |
| Harpenden to Yate | 90.25 mi (145.24 km) |
| Harpenden to Yatton | 110.25 mi (177.43 km) |
| Harpenden to Yaxley | 48.70 mi (78.37 km) |
| Harpenden to Yeadon | 152.30 mi (245.11 km) |
| Harpenden to Yeovil | 115.49 mi (185.86 km) |
| Harpenden to Yiewsley | 21.64 mi (34.83 km) |
| Harpenden to York | 151.10 mi (243.17 km) |
| Harpenden to Ystrad Mynach | 124.18 mi (199.85 km) |
| Harpenden to Abbeville (Louisiana) | 4,691.76 mi (7,550.65 km) |
| Harpenden to Aberdeen (Maryland) | 3,586.31 mi (5,771.61 km) |
| Harpenden to Aberdeen (South Dakota) | 4,149.71 mi (6,678.31 km) |
| Harpenden to Aberdeen (Washington) | 4,836.12 mi (7,782.99 km) |
| Harpenden to Abilene (Texas) | 4,858.73 mi (7,819.38 km) |
