| Guadarrama to Marsala | 904.82 mi (1,456.16 km) |
| Guadarrama to Marsciano | 858.57 mi (1,381.74 km) |
| Guadarrama to Martano | 1,174.67 mi (1,890.45 km) |
| Guadarrama to Martellago | 883.96 mi (1,422.60 km) |
| Guadarrama to Martina Franca | 1,119.57 mi (1,801.77 km) |
| Guadarrama to Martinengo | 775.00 mi (1,247.24 km) |
| Guadarrama to Martinsicuro | 938.35 mi (1,510.13 km) |
| Guadarrama to Mascali | 1,049.93 mi (1,689.71 km) |
| Guadarrama to Mascalucia | 1,045.90 mi (1,683.22 km) |
| Guadarrama to Masera di Padova | 865.96 mi (1,393.62 km) |
| Guadarrama to Maserada sul Piave | 895.41 mi (1,441.02 km) |
| Guadarrama to Massa | 761.25 mi (1,225.12 km) |
| Guadarrama to Massa Lombarda | 848.85 mi (1,366.10 km) |
| Guadarrama to Massafra | 1,109.30 mi (1,785.24 km) |
| Guadarrama to Massalubrense | 964.90 mi (1,552.85 km) |
