| Portimao to Mechernich | 1,194.19 mi (1,921.86 km) |
| Portimao to Meckenbeuren | 1,171.91 mi (1,886.01 km) |
| Portimao to Meckenheim | 1,207.19 mi (1,942.78 km) |
| Portimao to Meerane | 1,400.72 mi (2,254.25 km) |
| Portimao to Meerbusch | 1,227.86 mi (1,976.05 km) |
| Portimao to Meine | 1,400.24 mi (2,253.46 km) |
| Portimao to Meinerzhagen | 1,249.77 mi (2,011.31 km) |
| Portimao to Meiningen | 1,315.97 mi (2,117.85 km) |
| Portimao to Meissen | 1,449.65 mi (2,332.98 km) |
| Portimao to Meitingen | 1,252.09 mi (2,015.04 km) |
| Portimao to Melle | 1,324.17 mi (2,131.04 km) |
| Portimao to Melsungen | 1,311.93 mi (2,111.34 km) |
| Portimao to Memmelsdorf | 1,309.87 mi (2,108.03 km) |
| Portimao to Memmingen | 1,206.77 mi (1,942.11 km) |
| Portimao to Mendig | 1,203.10 mi (1,936.21 km) |
