| Mason City to Clemson (South Carolina) | 807.39 mi (1,299.38 km) |
| Mason City to Clermont (Florida) | 1,194.56 mi (1,922.46 km) |
| Mason City to Cleveland (Mississippi) | 663.33 mi (1,067.53 km) |
| Mason City to Cleveland (Ohio) | 599.28 mi (964.44 km) |
| Mason City to Cleveland (Tennessee) | 707.81 mi (1,139.11 km) |
| Mason City to Cleveland Heights (Ohio) | 604.51 mi (972.86 km) |
| Mason City to Cliffside Park (New Jersey) | 997.41 mi (1,605.17 km) |
| Mason City to Clifton (Colorado) | 841.30 mi (1,353.94 km) |
| Mason City to Clifton (New Jersey) | 988.11 mi (1,590.21 km) |
| Mason City to Clinton (Iowa) | 175.62 mi (282.63 km) |
| Mason City to Clinton (Maryland) | 901.16 mi (1,450.28 km) |
| Mason City to Clinton (Mississippi) | 761.89 mi (1,226.14 km) |
| Mason City to Clinton (Utah) | 974.29 mi (1,567.97 km) |
| Mason City to Clive (Iowa) | 110.30 mi (177.51 km) |
| Mason City to Cloquet (Minnesota) | 249.31 mi (401.22 km) |
