| Mason City to Merrick (New York) | 1,022.51 mi (1,645.57 km) |
| Mason City to Merrifield (Virginia) | 881.15 mi (1,418.08 km) |
| Mason City to Merrillville (Indiana) | 321.89 mi (518.04 km) |
| Mason City to Merritt Island (Florida) | 1,239.62 mi (1,994.98 km) |
| Mason City to Mesa (Arizona) | 1,205.03 mi (1,939.30 km) |
| Mason City to Mesquite (Nevada) | 1,187.90 mi (1,911.74 km) |
| Mason City to Mesquite (Texas) | 740.93 mi (1,192.41 km) |
| Mason City to Metairie (Louisiana) | 923.81 mi (1,486.72 km) |
| Mason City to Methuen Town (Massachusetts) | 1,110.46 mi (1,787.12 km) |
| Mason City to Metuchen (New Jersey) | 983.93 mi (1,583.48 km) |
| Mason City to Mexico (Missouri) | 283.95 mi (456.97 km) |
| Mason City to Miami (Florida) | 1,405.73 mi (2,262.30 km) |
| Mason City to Miami (Oklahoma) | 441.51 mi (710.54 km) |
| Mason City to Miami Beach (Florida) | 1,405.79 mi (2,262.40 km) |
| Mason City to Miami Gardens (Florida) | 1,395.08 mi (2,245.16 km) |
