| Harpenden to Normanton | 137.26 mi (220.90 km) |
| Harpenden to North Hykeham | 94.88 mi (152.70 km) |
| Harpenden to North Shields | 225.09 mi (362.25 km) |
| Harpenden to North Tidworth | 69.19 mi (111.35 km) |
| Harpenden to North Walsham | 101.00 mi (162.54 km) |
| Harpenden to Northallerton | 179.77 mi (289.31 km) |
| Harpenden to Northampton | 36.66 mi (58.99 km) |
| Harpenden to Northenden | 135.87 mi (218.65 km) |
| Harpenden to Northfield | 79.59 mi (128.09 km) |
| Harpenden to Northfleet | 39.52 mi (63.61 km) |
| Harpenden to Northolt | 18.73 mi (30.14 km) |
| Harpenden to Northwich | 134.90 mi (217.11 km) |
| Harpenden to Northwood | 15.22 mi (24.49 km) |
| Harpenden to Norton | 195.59 mi (314.78 km) |
| Harpenden to Norwich | 89.38 mi (143.84 km) |
