| Rio Maior to Mechernich | 1,084.91 mi (1,746.00 km) |
| Rio Maior to Meckenbeuren | 1,088.02 mi (1,751.00 km) |
| Rio Maior to Meckenheim | 1,098.78 mi (1,768.32 km) |
| Rio Maior to Meerane | 1,304.42 mi (2,099.27 km) |
| Rio Maior to Meerbusch | 1,115.51 mi (1,795.25 km) |
| Rio Maior to Meine | 1,292.35 mi (2,079.83 km) |
| Rio Maior to Meinerzhagen | 1,140.71 mi (1,835.80 km) |
| Rio Maior to Meiningen | 1,216.75 mi (1,958.17 km) |
| Rio Maior to Meissen | 1,353.74 mi (2,178.64 km) |
| Rio Maior to Meitingen | 1,165.71 mi (1,876.04 km) |
| Rio Maior to Melle | 1,212.02 mi (1,950.55 km) |
| Rio Maior to Melsungen | 1,207.64 mi (1,943.50 km) |
| Rio Maior to Memmelsdorf | 1,215.30 mi (1,955.83 km) |
| Rio Maior to Memmingen | 1,122.45 mi (1,806.40 km) |
| Rio Maior to Mendig | 1,096.73 mi (1,765.02 km) |
