| Mason City to Monticello (Minnesota) | 151.52 mi (243.84 km) |
| Mason City to Montrose (Colorado) | 830.56 mi (1,336.66 km) |
| Mason City to Moody (Alabama) | 752.53 mi (1,211.09 km) |
| Mason City to Moore (Oklahoma) | 586.51 mi (943.90 km) |
| Mason City to Moorestown-Lenola (New Jersey) | 966.00 mi (1,554.63 km) |
| Mason City to Mooresville (North Carolina) | 841.04 mi (1,353.53 km) |
| Mason City to Moorhead (Minnesota) | 309.80 mi (498.58 km) |
| Mason City to Moorpark (California) | 1,505.72 mi (2,423.23 km) |
| Mason City to Moraga (California) | 1,554.84 mi (2,502.27 km) |
| Mason City to Moreno Valley (California) | 1,438.44 mi (2,314.94 km) |
| Mason City to Morgan City (Louisiana) | 935.53 mi (1,505.59 km) |
| Mason City to Morgan Hill (California) | 1,550.39 mi (2,495.12 km) |
| Mason City to Morganton (North Carolina) | 797.71 mi (1,283.79 km) |
| Mason City to Morgantown (West Virginia) | 727.55 mi (1,170.87 km) |
| Mason City to Morris (Illinois) | 272.88 mi (439.16 km) |
