| Harpenden to Magstadt | 462.55 mi (744.41 km) |
| Harpenden to Mainaschaff | 429.89 mi (691.84 km) |
| Harpenden to Mainburg | 578.40 mi (930.84 km) |
| Harpenden to Maintal | 415.51 mi (668.69 km) |
| Harpenden to Mainz | 396.10 mi (637.46 km) |
| Harpenden to Maisach | 571.84 mi (920.28 km) |
| Harpenden to Maisenhausen | 425.25 mi (684.37 km) |
| Harpenden to Malente | 481.00 mi (774.09 km) |
| Harpenden to Malsch | 433.02 mi (696.88 km) |
| Harpenden to Manching | 564.61 mi (908.65 km) |
| Harpenden to Mannheim | 418.16 mi (672.96 km) |
| Harpenden to Mansfeld | 505.23 mi (813.08 km) |
| Harpenden to Marbach am Neckar | 467.22 mi (751.92 km) |
| Harpenden to Marburg | 399.83 mi (643.46 km) |
| Harpenden to Marienberg | 589.08 mi (948.03 km) |
