| Mason City to Mechernich | 4,373.91 mi (7,039.13 km) |
| Mason City to Meckenbeuren | 4,600.69 mi (7,404.10 km) |
| Mason City to Meckenheim | 4,385.46 mi (7,057.71 km) |
| Mason City to Meerane | 4,563.28 mi (7,343.89 km) |
| Mason City to Meerbusch | 4,347.23 mi (6,996.19 km) |
| Mason City to Meine | 4,432.40 mi (7,133.25 km) |
| Mason City to Meinerzhagen | 4,387.04 mi (7,060.26 km) |
| Mason City to Meiningen | 4,507.06 mi (7,253.41 km) |
| Mason City to Meissen | 4,583.25 mi (7,376.03 km) |
| Mason City to Meitingen | 4,609.48 mi (7,418.24 km) |
| Mason City to Melle | 4,366.25 mi (7,026.80 km) |
| Mason City to Melsungen | 4,452.41 mi (7,165.46 km) |
| Mason City to Memmelsdorf | 4,552.30 mi (7,326.22 km) |
| Mason City to Memmingen | 4,610.31 mi (7,419.57 km) |
| Mason City to Mendig | 4,405.46 mi (7,089.91 km) |
