| Iowa City to Cehegin | 4,533.82 mi (7,296.49 km) |
| Iowa City to Cervello | 4,565.95 mi (7,348.18 km) |
| Iowa City to Cervera | 4,526.13 mi (7,284.10 km) |
| Iowa City to Ceuti | 4,557.83 mi (7,335.12 km) |
| Iowa City to Cheste | 4,528.29 mi (7,287.58 km) |
| Iowa City to Chiclana de la Frontera | 4,401.56 mi (7,083.62 km) |
| Iowa City to Chipiona | 4,376.34 mi (7,043.04 km) |
| Iowa City to Chiva | 4,527.07 mi (7,285.62 km) |
| Iowa City to Churriana de la Vega | 4,487.59 mi (7,222.07 km) |
| Iowa City to Ciempozuelos | 4,373.03 mi (7,037.71 km) |
| Iowa City to Cieza | 4,544.94 mi (7,314.38 km) |
| Iowa City to Cisterniga | 4,271.77 mi (6,874.74 km) |
| Iowa City to Ciudad de Melilla | 4,593.64 mi (7,392.75 km) |
| Iowa City to Ciudad Real | 4,404.59 mi (7,088.50 km) |
| Iowa City to Ciudad-Rodrigo | 4,227.19 mi (6,803.00 km) |
