| Harpenden to Minervino Murge | 1,072.56 mi (1,726.12 km) |
| Harpenden to Minturno | 986.85 mi (1,588.19 km) |
| Harpenden to Mira | 719.06 mi (1,157.22 km) |
| Harpenden to Mirandola | 708.55 mi (1,140.29 km) |
| Harpenden to Mirano | 714.98 mi (1,150.65 km) |
| Harpenden to Misano Adriatico | 810.16 mi (1,303.83 km) |
| Harpenden to Misilmeri | 1,163.22 mi (1,872.02 km) |
| Harpenden to Missaglia | 610.01 mi (981.72 km) |
| Harpenden to Misterbianco | 1,237.89 mi (1,992.19 km) |
| Harpenden to Modena | 716.11 mi (1,152.46 km) |
| Harpenden to Modica | 1,269.22 mi (2,042.61 km) |
| Harpenden to Modugno | 1,097.47 mi (1,766.21 km) |
| Harpenden to Mogliano Veneto | 717.05 mi (1,153.98 km) |
| Harpenden to Molfetta | 1,085.11 mi (1,746.31 km) |
| Harpenden to Molinella | 742.40 mi (1,194.78 km) |
