| Mason City to Cehegin | 4,555.20 mi (7,330.89 km) |
| Mason City to Cervello | 4,576.23 mi (7,364.73 km) |
| Mason City to Cervera | 4,536.64 mi (7,301.01 km) |
| Mason City to Ceuti | 4,578.62 mi (7,368.57 km) |
| Mason City to Cheste | 4,545.53 mi (7,315.32 km) |
| Mason City to Chiclana de la Frontera | 4,431.46 mi (7,131.75 km) |
| Mason City to Chipiona | 4,405.92 mi (7,090.64 km) |
| Mason City to Chiva | 4,544.37 mi (7,313.46 km) |
| Mason City to Churriana de la Vega | 4,513.06 mi (7,263.07 km) |
| Mason City to Ciempozuelos | 4,392.16 mi (7,068.50 km) |
| Mason City to Cieza | 4,565.58 mi (7,347.59 km) |
| Mason City to Cisterniga | 4,288.92 mi (6,902.35 km) |
| Mason City to Ciudad de Melilla | 4,622.07 mi (7,438.50 km) |
| Mason City to Ciudad Real | 4,426.55 mi (7,123.85 km) |
| Mason City to Ciudad-Rodrigo | 4,248.59 mi (6,837.44 km) |
