| Harpenden to Mozzate | 598.46 mi (963.13 km) |
| Harpenden to Muggia | 771.87 mi (1,242.20 km) |
| Harpenden to Muggio | 611.87 mi (984.71 km) |
| Harpenden to Mugnano di Napoli | 1,021.02 mi (1,643.17 km) |
| Harpenden to Musile di Piave | 726.46 mi (1,169.13 km) |
| Harpenden to Mussomeli | 1,198.62 mi (1,929.00 km) |
| Harpenden to Naples | 1,026.47 mi (1,651.95 km) |
| Harpenden to Nardo | 1,187.66 mi (1,911.36 km) |
| Harpenden to Narni | 879.75 mi (1,415.83 km) |
| Harpenden to Nembro | 621.90 mi (1,000.85 km) |
| Harpenden to Nepi | 889.23 mi (1,431.08 km) |
| Harpenden to Nerviano | 606.44 mi (975.98 km) |
| Harpenden to Nettuno | 942.06 mi (1,516.09 km) |
| Harpenden to Nichelino | 596.57 mi (960.09 km) |
| Harpenden to Nicosia | 1,206.75 mi (1,942.08 km) |
