| Mason City to Clarksdale (Mississippi) | 634.72 mi (1,021.49 km) |
| Mason City to Clarkston (Georgia) | 805.81 mi (1,296.82 km) |
| Mason City to Clarksville (Indiana) | 512.10 mi (824.15 km) |
| Mason City to Clarksville (Tennessee) | 550.31 mi (885.64 km) |
| Mason City to Clawson (Michigan) | 510.55 mi (821.65 km) |
| Mason City to Clay (Alabama) | 743.66 mi (1,196.81 km) |
| Mason City to Clayton (California) | 1,542.59 mi (2,482.56 km) |
| Mason City to Clayton (Missouri) | 345.36 mi (555.81 km) |
| Mason City to Clayton (North Carolina) | 940.13 mi (1,512.99 km) |
| Mason City to Clayton (Ohio) | 511.49 mi (823.17 km) |
| Mason City to Clearfield (Utah) | 972.82 mi (1,565.60 km) |
| Mason City to Clearlake (California) | 1,552.29 mi (2,498.17 km) |
| Mason City to Clearwater (Florida) | 1,198.86 mi (1,929.38 km) |
| Mason City to Cleburne (Texas) | 780.11 mi (1,255.47 km) |
| Mason City to Clemmons (North Carolina) | 839.43 mi (1,350.94 km) |
