| Greenock to Manerbio | 975.95 mi (1,570.64 km) |
| Greenock to Manfredonia | 1,355.20 mi (2,180.99 km) |
| Greenock to Maniago | 1,011.30 mi (1,627.53 km) |
| Greenock to Mantova | 1,006.63 mi (1,620.02 km) |
| Greenock to Maranello | 1,043.64 mi (1,679.57 km) |
| Greenock to Marano di Napoli | 1,345.84 mi (2,165.92 km) |
| Greenock to Marano Vicentino | 996.00 mi (1,602.91 km) |
| Greenock to Marcianise | 1,341.47 mi (2,158.88 km) |
| Greenock to Marcon | 1,030.29 mi (1,658.09 km) |
| Greenock to Mareno di Piave | 1,016.77 mi (1,636.33 km) |
| Greenock to Margherita di Savoia | 1,377.20 mi (2,216.39 km) |
| Greenock to Mariano Comense | 930.38 mi (1,497.31 km) |
| Greenock to Marigliano | 1,351.54 mi (2,175.09 km) |
| Greenock to Marino | 1,252.86 mi (2,016.28 km) |
| Greenock to Marostica | 1,000.31 mi (1,609.84 km) |
