| Harpenden to Luzzara | 691.74 mi (1,113.24 km) |
| Harpenden to Luzzi | 1,167.66 mi (1,879.17 km) |
| Harpenden to Macerata | 869.53 mi (1,399.37 km) |
| Harpenden to Macerata Campania | 1,014.25 mi (1,632.27 km) |
| Harpenden to Macomer | 908.81 mi (1,462.59 km) |
| Harpenden to Maddaloni | 1,019.81 mi (1,641.23 km) |
| Harpenden to Magenta | 607.77 mi (978.10 km) |
| Harpenden to Magione | 835.72 mi (1,344.96 km) |
| Harpenden to Maglie | 1,194.42 mi (1,922.23 km) |
| Harpenden to Magnago | 599.19 mi (964.31 km) |
| Harpenden to Malalbergo | 732.88 mi (1,179.46 km) |
| Harpenden to Malnate | 590.31 mi (950.01 km) |
| Harpenden to Malo | 682.79 mi (1,098.84 km) |
| Harpenden to Mandello del Lario | 598.54 mi (963.25 km) |
| Harpenden to Manduria | 1,162.31 mi (1,870.56 km) |
