| Mason City to Castrovillari | 5,210.80 mi (8,385.98 km) |
| Mason City to Catania | 5,280.61 mi (8,498.32 km) |
| Mason City to Catanzaro | 5,270.63 mi (8,482.26 km) |
| Mason City to Cattolica | 4,884.38 mi (7,860.65 km) |
| Mason City to Cava de' Tirreni | 5,111.56 mi (8,226.26 km) |
| Mason City to Cavallino | 5,260.92 mi (8,466.63 km) |
| Mason City to Cavarzere | 4,806.67 mi (7,735.59 km) |
| Mason City to Cave | 4,991.85 mi (8,033.61 km) |
| Mason City to Cavriago | 4,769.27 mi (7,675.39 km) |
| Mason City to Cavriglia | 4,858.49 mi (7,818.99 km) |
| Mason City to Cazzago San Martino | 4,710.97 mi (7,581.58 km) |
| Mason City to Ceccano | 5,018.73 mi (8,076.87 km) |
| Mason City to Cecina | 4,831.12 mi (7,774.93 km) |
| Mason City to Cefalu | 5,212.89 mi (8,389.34 km) |
| Mason City to Ceglie Messapico | 5,218.69 mi (8,398.67 km) |
