| Rio Maior to Melzo | 1,025.32 mi (1,650.09 km) |
| Rio Maior to Mendicino | 1,339.19 mi (2,155.22 km) |
| Rio Maior to Menfi | 1,187.84 mi (1,911.64 km) |
| Rio Maior to Mentana | 1,142.94 mi (1,839.39 km) |
| Rio Maior to Merano | 1,130.37 mi (1,819.15 km) |
| Rio Maior to Merate | 1,030.44 mi (1,658.33 km) |
| Rio Maior to Mercato San Severino | 1,253.51 mi (2,017.32 km) |
| Rio Maior to Mercogliano | 1,251.76 mi (2,014.51 km) |
| Rio Maior to Mesagne | 1,413.12 mi (2,274.19 km) |
| Rio Maior to Messina | 1,317.57 mi (2,120.42 km) |
| Rio Maior to Mestre | 1,156.46 mi (1,861.14 km) |
| Rio Maior to Mestrino | 1,133.64 mi (1,824.41 km) |
| Rio Maior to Milan | 1,014.17 mi (1,632.15 km) |
| Rio Maior to Milazzo | 1,300.36 mi (2,092.72 km) |
| Rio Maior to Minerbio | 1,106.34 mi (1,780.48 km) |
