| Keystone to Marsala | 5,308.51 mi (8,543.23 km) |
| Keystone to Marsciano | 5,154.52 mi (8,295.40 km) |
| Keystone to Martano | 5,514.15 mi (8,874.16 km) |
| Keystone to Martellago | 5,072.89 mi (8,164.03 km) |
| Keystone to Martina Franca | 5,453.04 mi (8,775.82 km) |
| Keystone to Martinengo | 4,965.63 mi (7,991.42 km) |
| Keystone to Martinsicuro | 5,228.24 mi (8,414.04 km) |
| Keystone to Mascali | 5,445.40 mi (8,763.52 km) |
| Keystone to Mascalucia | 5,443.84 mi (8,761.02 km) |
| Keystone to Masera di Padova | 5,066.28 mi (8,153.39 km) |
| Keystone to Maserada sul Piave | 5,074.33 mi (8,166.34 km) |
| Keystone to Massa | 5,022.60 mi (8,083.10 km) |
| Keystone to Massa Lombarda | 5,087.91 mi (8,188.20 km) |
| Keystone to Massafra | 5,446.73 mi (8,765.67 km) |
| Keystone to Massalubrense | 5,316.17 mi (8,555.55 km) |
