| Gretna to Manerbio | 5,229.72 mi (8,416.41 km) |
| Gretna to Manfredonia | 5,610.13 mi (9,028.63 km) |
| Gretna to Maniago | 5,311.76 mi (8,548.46 km) |
| Gretna to Mantova | 5,264.76 mi (8,472.81 km) |
| Gretna to Maranello | 5,288.78 mi (8,511.47 km) |
| Gretna to Marano di Napoli | 5,560.70 mi (8,949.08 km) |
| Gretna to Marano Vicentino | 5,273.87 mi (8,487.47 km) |
| Gretna to Marcianise | 5,561.06 mi (8,949.66 km) |
| Gretna to Marcon | 5,315.28 mi (8,554.12 km) |
| Gretna to Mareno di Piave | 5,307.70 mi (8,541.93 km) |
| Gretna to Margherita di Savoia | 5,630.22 mi (9,060.97 km) |
| Gretna to Mariano Comense | 5,178.31 mi (8,333.68 km) |
| Gretna to Marigliano | 5,571.35 mi (8,966.22 km) |
| Gretna to Marino | 5,462.41 mi (8,790.89 km) |
| Gretna to Marostica | 5,281.69 mi (8,500.06 km) |
