| Mason City to Conyers (Georgia) | 822.10 mi (1,323.04 km) |
| Mason City to Cookeville (Tennessee) | 632.88 mi (1,018.51 km) |
| Mason City to Coolidge (Arizona) | 1,217.19 mi (1,958.87 km) |
| Mason City to Coon Rapids (Minnesota) | 140.14 mi (225.54 km) |
| Mason City to Cooper City (Florida) | 1,387.53 mi (2,233.01 km) |
| Mason City to Coos Bay (Oregon) | 1,552.40 mi (2,498.35 km) |
| Mason City to Copiague (New York) | 1,030.26 mi (1,658.05 km) |
| Mason City to Coppell (Texas) | 733.08 mi (1,179.77 km) |
| Mason City to Copperas Cove (Texas) | 870.38 mi (1,400.75 km) |
| Mason City to Coral Gables (Florida) | 1,408.83 mi (2,267.29 km) |
| Mason City to Coral Springs (Florida) | 1,374.74 mi (2,212.43 km) |
| Mason City to Coral Terrace (Florida) | 1,405.25 mi (2,261.53 km) |
| Mason City to Coralville (Iowa) | 129.29 mi (208.07 km) |
| Mason City to Coram (New York) | 1,045.78 mi (1,683.03 km) |
| Mason City to Corcoran (California) | 1,478.18 mi (2,378.91 km) |
