| Harpenden to Medvode | 774.09 mi (1,245.77 km) |
| Harpenden to Menges | 779.07 mi (1,253.79 km) |
| Harpenden to Metlika | 829.07 mi (1,334.26 km) |
| Harpenden to Mezica | 776.24 mi (1,249.24 km) |
| Harpenden to Miklavz na Dravskem Polju | 810.44 mi (1,304.28 km) |
| Harpenden to Miren | 753.12 mi (1,212.03 km) |
| Harpenden to Mirna | 807.15 mi (1,298.97 km) |
| Harpenden to Mirna Pec | 811.60 mi (1,306.15 km) |
| Harpenden to Mislinja | 792.65 mi (1,275.65 km) |
| Harpenden to Mokronog | 810.57 mi (1,304.49 km) |
| Harpenden to Moravce | 787.01 mi (1,266.57 km) |
| Harpenden to Moravske-Toplice | 824.83 mi (1,327.44 km) |
| Harpenden to Mozirje | 787.38 mi (1,267.16 km) |
| Harpenden to Murska Sobota | 823.29 mi (1,324.96 km) |
| Harpenden to Muta | 785.03 mi (1,263.38 km) |
