| Mason City to Carrollwood (Florida) | 1,200.76 mi (1,932.44 km) |
| Mason City to Carson (California) | 1,492.22 mi (2,401.50 km) |
| Mason City to Carson City (Nevada) | 1,402.33 mi (2,256.84 km) |
| Mason City to Carteret (New Jersey) | 989.85 mi (1,593.01 km) |
| Mason City to Cartersville (Georgia) | 767.67 mi (1,235.44 km) |
| Mason City to Carthage (Missouri) | 418.66 mi (673.76 km) |
| Mason City to Cary (Illinois) | 259.58 mi (417.75 km) |
| Mason City to Cary (North Carolina) | 918.55 mi (1,478.26 km) |
| Mason City to Casa de Oro-Mount Helix (California) | 1,472.90 mi (2,370.40 km) |
| Mason City to Casa Grande (Arizona) | 1,228.94 mi (1,977.79 km) |
| Mason City to Casas Adobes (Arizona) | 1,222.18 mi (1,966.91 km) |
| Mason City to Cascades (Virginia) | 869.12 mi (1,398.72 km) |
| Mason City to Casper (Wyoming) | 662.74 mi (1,066.58 km) |
| Mason City to Casselberry (Florida) | 1,198.78 mi (1,929.25 km) |
| Mason City to Castaic (California) | 1,486.74 mi (2,392.67 km) |
