| Mason City to Menen | 4,240.17 mi (6,823.89 km) |
| Mason City to Merchtem | 4,273.36 mi (6,877.31 km) |
| Mason City to Merelbeke | 4,254.77 mi (6,847.39 km) |
| Mason City to Merksem | 4,269.86 mi (6,871.68 km) |
| Mason City to Merksplas | 4,280.01 mi (6,888.01 km) |
| Mason City to Mettet | 4,314.28 mi (6,943.16 km) |
| Mason City to Meulebeke | 4,240.12 mi (6,823.81 km) |
| Mason City to Middelkerke | 4,214.20 mi (6,782.10 km) |
| Mason City to Mol | 4,296.14 mi (6,913.98 km) |
| Mason City to Mons | 4,283.62 mi (6,893.81 km) |
| Mason City to Montignies-le-Tilleul | 4,301.88 mi (6,923.20 km) |
| Mason City to Moorslede | 4,234.35 mi (6,814.53 km) |
| Mason City to Moortebeek | 4,281.55 mi (6,890.49 km) |
| Mason City to Morlanwelz-Mariemont | 4,293.82 mi (6,910.24 km) |
| Mason City to Mortsel | 4,273.77 mi (6,877.96 km) |
