| Key Largo to Marsala | 5,321.30 mi (8,563.81 km) |
| Key Largo to Marsciano | 5,188.08 mi (8,349.41 km) |
| Key Largo to Martano | 5,545.00 mi (8,923.81 km) |
| Key Largo to Martellago | 5,117.06 mi (8,235.11 km) |
| Key Largo to Martina Franca | 5,484.43 mi (8,826.34 km) |
| Key Largo to Martinengo | 5,007.24 mi (8,058.37 km) |
| Key Largo to Martinsicuro | 5,263.67 mi (8,471.06 km) |
| Key Largo to Mascali | 5,461.99 mi (8,790.23 km) |
| Key Largo to Mascalucia | 5,459.49 mi (8,786.19 km) |
| Key Largo to Masera di Padova | 5,109.16 mi (8,222.41 km) |
| Key Largo to Maserada sul Piave | 5,119.52 mi (8,239.07 km) |
| Key Largo to Massa | 5,058.17 mi (8,140.33 km) |
| Key Largo to Massa Lombarda | 5,127.16 mi (8,251.37 km) |
| Key Largo to Massafra | 5,477.35 mi (8,814.94 km) |
| Key Largo to Massalubrense | 5,343.02 mi (8,598.76 km) |
