| Keystone to Massarosa | 5,036.23 mi (8,105.03 km) |
| Keystone to Matelica | 5,175.85 mi (8,329.73 km) |
| Keystone to Matera | 5,420.03 mi (8,722.70 km) |
| Keystone to Matino | 5,511.86 mi (8,870.48 km) |
| Keystone to Mazzarino | 5,410.52 mi (8,707.40 km) |
| Keystone to Meda | 4,936.21 mi (7,944.06 km) |
| Keystone to Medesano | 5,003.59 mi (8,052.50 km) |
| Keystone to Medicina | 5,078.70 mi (8,173.38 km) |
| Keystone to Meldola | 5,107.28 mi (8,219.37 km) |
| Keystone to Melegnano | 4,951.14 mi (7,968.09 km) |
| Keystone to Melendugno | 5,513.50 mi (8,873.12 km) |
| Keystone to Melfi | 5,365.33 mi (8,634.66 km) |
| Keystone to Melilli | 5,459.15 mi (8,785.66 km) |
| Keystone to Melito di Napoli | 5,301.60 mi (8,532.11 km) |
| Keystone to Melito di Porto Salvo | 5,468.45 mi (8,800.62 km) |
