| Guadarrama to Manerbio | 786.80 mi (1,266.24 km) |
| Guadarrama to Manfredonia | 1,040.55 mi (1,674.60 km) |
| Guadarrama to Maniago | 922.48 mi (1,484.59 km) |
| Guadarrama to Mantova | 812.64 mi (1,307.82 km) |
| Guadarrama to Maranello | 804.59 mi (1,294.87 km) |
| Guadarrama to Marano di Napoli | 954.28 mi (1,535.77 km) |
| Guadarrama to Marano Vicentino | 853.79 mi (1,374.04 km) |
| Guadarrama to Marcianise | 959.57 mi (1,544.29 km) |
| Guadarrama to Marcon | 890.69 mi (1,433.43 km) |
| Guadarrama to Mareno di Piave | 898.91 mi (1,446.65 km) |
| Guadarrama to Margherita di Savoia | 1,053.74 mi (1,695.83 km) |
| Guadarrama to Mariano Comense | 752.15 mi (1,210.47 km) |
| Guadarrama to Marigliano | 967.95 mi (1,557.76 km) |
| Guadarrama to Marino | 872.69 mi (1,404.46 km) |
| Guadarrama to Marostica | 864.94 mi (1,391.99 km) |
