| Portimao to Manerbio | 1,120.30 mi (1,802.94 km) |
| Portimao to Manfredonia | 1,337.48 mi (2,152.47 km) |
| Portimao to Maniago | 1,256.50 mi (2,022.15 km) |
| Portimao to Mantova | 1,144.04 mi (1,841.15 km) |
| Portimao to Maranello | 1,131.96 mi (1,821.71 km) |
| Portimao to Marano di Napoli | 1,243.37 mi (2,001.01 km) |
| Portimao to Marano Vicentino | 1,187.19 mi (1,910.59 km) |
| Portimao to Marcianise | 1,250.21 mi (2,012.02 km) |
| Portimao to Marcon | 1,222.25 mi (1,967.02 km) |
| Portimao to Mareno di Piave | 1,231.84 mi (1,982.46 km) |
| Portimao to Margherita di Savoia | 1,347.95 mi (2,169.31 km) |
| Portimao to Mariano Comense | 1,088.56 mi (1,751.87 km) |
| Portimao to Marigliano | 1,257.44 mi (2,023.65 km) |
| Portimao to Marino | 1,172.24 mi (1,886.53 km) |
| Portimao to Marostica | 1,198.28 mi (1,928.45 km) |
