| Mason City to Medford (New York) | 1,047.88 mi (1,686.40 km) |
| Mason City to Medford (Oregon) | 1,497.90 mi (2,410.64 km) |
| Mason City to Medina (Ohio) | 596.38 mi (959.77 km) |
| Mason City to Medulla (Florida) | 1,221.76 mi (1,966.24 km) |
| Mason City to Mehlville (Missouri) | 354.67 mi (570.79 km) |
| Mason City to Melbourne (Florida) | 1,252.06 mi (2,015.00 km) |
| Mason City to Melissa (Texas) | 705.02 mi (1,134.63 km) |
| Mason City to Melrose (Massachusetts) | 1,120.15 mi (1,802.71 km) |
| Mason City to Melrose Park (Illinois) | 284.96 mi (458.60 km) |
| Mason City to Melville (New York) | 1,027.31 mi (1,653.30 km) |
| Mason City to Melvindale (Michigan) | 511.96 mi (823.92 km) |
| Mason City to Memphis (Florida) | 1,231.30 mi (1,981.58 km) |
| Mason City to Memphis (Tennessee) | 581.79 mi (936.29 km) |
| Mason City to Menasha (Wisconsin) | 249.51 mi (401.54 km) |
| Mason City to Mendota (California) | 1,498.13 mi (2,411.01 km) |
