| Greenock to Melzo | 948.18 mi (1,525.95 km) |
| Greenock to Mendicino | 1,498.58 mi (2,411.73 km) |
| Greenock to Menfi | 1,510.16 mi (2,430.37 km) |
| Greenock to Mentana | 1,237.88 mi (1,992.17 km) |
| Greenock to Merano | 936.20 mi (1,506.67 km) |
| Greenock to Merate | 937.41 mi (1,508.62 km) |
| Greenock to Mercato San Severino | 1,369.31 mi (2,203.69 km) |
| Greenock to Mercogliano | 1,360.57 mi (2,189.63 km) |
| Greenock to Mesagne | 1,472.56 mi (2,369.86 km) |
| Greenock to Messina | 1,543.19 mi (2,483.53 km) |
| Greenock to Mestre | 1,031.79 mi (1,660.51 km) |
| Greenock to Mestrino | 1,019.57 mi (1,640.83 km) |
| Greenock to Milan | 943.74 mi (1,518.80 km) |
| Greenock to Milazzo | 1,533.03 mi (2,467.17 km) |
| Greenock to Minerbio | 1,056.38 mi (1,700.09 km) |
