| Harpenden to Mions | 488.84 mi (786.71 km) |
| Harpenden to Mios | 499.06 mi (803.15 km) |
| Harpenden to Miramas | 620.68 mi (998.88 km) |
| Harpenden to Miribel | 478.99 mi (770.86 km) |
| Harpenden to Mitry-Mory | 235.38 mi (378.81 km) |
| Harpenden to Moissac | 537.01 mi (864.23 km) |
| Harpenden to Moissy-Cramayel | 256.01 mi (412.01 km) |
| Harpenden to Molsheim | 413.98 mi (666.24 km) |
| Harpenden to Mondeville | 182.66 mi (293.96 km) |
| Harpenden to Monistrol-sur-Loire | 495.81 mi (797.94 km) |
| Harpenden to Mons-en-Baroeul | 170.57 mi (274.50 km) |
| Harpenden to Mont-de-Marsan | 547.78 mi (881.57 km) |
| Harpenden to Mont-Saint-Aignan | 174.51 mi (280.84 km) |
| Harpenden to Mont-Saint-Martin | 311.01 mi (500.52 km) |
| Harpenden to Montargis | 297.47 mi (478.73 km) |
