| Keystone to Melzo | 4,951.70 mi (7,968.99 km) |
| Keystone to Mendicino | 5,445.47 mi (8,763.64 km) |
| Keystone to Menfi | 5,340.54 mi (8,594.77 km) |
| Keystone to Mentana | 5,195.01 mi (8,360.56 km) |
| Keystone to Merano | 4,998.53 mi (8,044.35 km) |
| Keystone to Merate | 4,947.32 mi (7,961.94 km) |
| Keystone to Mercato San Severino | 5,330.70 mi (8,578.93 km) |
| Keystone to Mercogliano | 5,325.31 mi (8,570.26 km) |
| Keystone to Mesagne | 5,478.98 mi (8,817.57 km) |
| Keystone to Messina | 5,448.61 mi (8,768.69 km) |
| Keystone to Mestre | 5,078.01 mi (8,172.28 km) |
| Keystone to Mestrino | 5,058.17 mi (8,140.35 km) |
| Keystone to Milan | 4,942.35 mi (7,953.94 km) |
| Keystone to Milazzo | 5,432.54 mi (8,742.83 km) |
| Keystone to Minerbio | 5,067.72 mi (8,155.70 km) |
