| Keystone to Manerbio | 4,987.36 mi (8,026.38 km) |
| Keystone to Manfredonia | 5,358.02 mi (8,622.90 km) |
| Keystone to Maniago | 5,080.39 mi (8,176.10 km) |
| Keystone to Mantova | 5,022.48 mi (8,082.90 km) |
| Keystone to Maranello | 5,042.63 mi (8,115.33 km) |
| Keystone to Marano di Napoli | 5,299.76 mi (8,529.14 km) |
| Keystone to Marano Vicentino | 5,036.56 mi (8,105.55 km) |
| Keystone to Marcianise | 5,301.22 mi (8,531.48 km) |
| Keystone to Marcon | 5,078.97 mi (8,173.82 km) |
| Keystone to Mareno di Piave | 5,073.38 mi (8,164.81 km) |
| Keystone to Margherita di Savoia | 5,377.11 mi (8,653.62 km) |
| Keystone to Mariano Comense | 4,936.11 mi (7,943.90 km) |
| Keystone to Marigliano | 5,311.27 mi (8,547.67 km) |
| Keystone to Marino | 5,203.02 mi (8,373.46 km) |
| Keystone to Marostica | 5,045.17 mi (8,119.42 km) |
