| Mason City to Mexborough | 3,982.56 mi (6,409.31 km) |
| Mason City to Mickleover | 3,993.87 mi (6,427.52 km) |
| Mason City to Middlesbrough | 3,946.96 mi (6,352.03 km) |
| Mason City to Middleton | 3,948.49 mi (6,354.47 km) |
| Mason City to Middlewich | 3,951.77 mi (6,359.76 km) |
| Mason City to Midsomer Norton | 4,016.85 mi (6,464.50 km) |
| Mason City to Mildenhall | 4,087.71 mi (6,578.54 km) |
| Mason City to Milford Haven | 3,906.57 mi (6,287.02 km) |
| Mason City to Mill Hill | 4,087.55 mi (6,578.28 km) |
| Mason City to Milngavie | 3,795.52 mi (6,108.29 km) |
| Mason City to Milnrow | 3,949.30 mi (6,355.79 km) |
| Mason City to Milton | 3,967.48 mi (6,385.05 km) |
| Mason City to Milton Keynes | 4,053.06 mi (6,522.76 km) |
| Mason City to Minehead | 3,982.71 mi (6,409.56 km) |
| Mason City to Minster | 4,132.66 mi (6,650.87 km) |
