| Mason City to Mirfield | 3,961.87 mi (6,376.02 km) |
| Mason City to Mitcham | 4,098.43 mi (6,595.79 km) |
| Mason City to Mold | 3,927.81 mi (6,321.20 km) |
| Mason City to Molesey | 4,090.71 mi (6,583.36 km) |
| Mason City to Monkseaton | 3,923.33 mi (6,314.00 km) |
| Mason City to Monmouth | 3,989.55 mi (6,420.56 km) |
| Mason City to Montrose | 3,834.06 mi (6,170.32 km) |
| Mason City to Morden | 4,096.83 mi (6,593.22 km) |
| Mason City to Morecambe | 3,906.65 mi (6,287.15 km) |
| Mason City to Moreton | 3,920.65 mi (6,309.68 km) |
| Mason City to Morley | 3,962.57 mi (6,377.14 km) |
| Mason City to Morpeth | 3,911.14 mi (6,294.37 km) |
| Mason City to Morriston | 3,949.44 mi (6,356.01 km) |
| Mason City to Mosbrough | 3,985.83 mi (6,414.58 km) |
| Mason City to Mossley | 3,955.15 mi (6,365.21 km) |
