| Harpenden to Nordwalde | 334.03 mi (537.56 km) |
| Harpenden to Northeim | 442.45 mi (712.05 km) |
| Harpenden to Norvenich | 310.38 mi (499.50 km) |
| Harpenden to Nossen | 589.58 mi (948.83 km) |
| Harpenden to Nottuln | 328.69 mi (528.98 km) |
| Harpenden to Numbrecht | 346.19 mi (557.14 km) |
| Harpenden to Nuremberg | 526.18 mi (846.80 km) |
| Harpenden to Nurtingen | 480.83 mi (773.83 km) |
| Harpenden to Nussloch | 432.38 mi (695.85 km) |
| Harpenden to Ober-Ramstadt | 419.93 mi (675.80 km) |
| Harpenden to Oberasbach | 522.08 mi (840.21 km) |
| Harpenden to Oberderdingen | 445.12 mi (716.35 km) |
| Harpenden to Oberhaching | 591.43 mi (951.82 km) |
| Harpenden to Oberhausen | 310.26 mi (499.32 km) |
| Harpenden to Oberhausen-Rheinhausen | 426.02 mi (685.62 km) |
