| Helensburgh to Melzo | 950.48 mi (1,529.65 km) |
| Helensburgh to Mendicino | 1,500.71 mi (2,415.16 km) |
| Helensburgh to Menfi | 1,512.88 mi (2,434.74 km) |
| Helensburgh to Mentana | 1,240.18 mi (1,995.87 km) |
| Helensburgh to Merano | 937.97 mi (1,509.52 km) |
| Helensburgh to Merate | 939.67 mi (1,512.25 km) |
| Helensburgh to Mercato San Severino | 1,371.46 mi (2,207.16 km) |
| Helensburgh to Mercogliano | 1,362.71 mi (2,193.08 km) |
| Helensburgh to Mesagne | 1,474.34 mi (2,372.72 km) |
| Helensburgh to Messina | 1,545.52 mi (2,487.27 km) |
| Helensburgh to Mestre | 1,033.61 mi (1,663.44 km) |
| Helensburgh to Mestrino | 1,021.48 mi (1,643.91 km) |
| Helensburgh to Milan | 946.08 mi (1,522.57 km) |
| Helensburgh to Milazzo | 1,535.40 mi (2,470.98 km) |
| Helensburgh to Minerbio | 1,058.49 mi (1,703.47 km) |
