| Iowa City to Campo de Criptana | 4,424.22 mi (7,120.09 km) |
| Iowa City to Campos del Puerto | 4,690.80 mi (7,549.11 km) |
| Iowa City to Canals | 4,553.18 mi (7,327.64 km) |
| Iowa City to Candelaria | 4,218.02 mi (6,788.25 km) |
| Iowa City to Canet de Mar | 4,584.44 mi (7,377.95 km) |
| Iowa City to Cangas | 4,068.32 mi (6,547.33 km) |
| Iowa City to Cangas de Narcea | 4,134.99 mi (6,654.62 km) |
| Iowa City to Canovellas | 4,570.70 mi (7,355.83 km) |
| Iowa City to Canteras | 4,586.61 mi (7,381.44 km) |
| Iowa City to Cantillana | 4,371.56 mi (7,035.35 km) |
| Iowa City to Capdepera | 4,697.42 mi (7,559.77 km) |
| Iowa City to Carballo | 4,039.96 mi (6,501.68 km) |
| Iowa City to Carcagente | 4,552.76 mi (7,326.96 km) |
| Iowa City to Cardedeu | 4,573.06 mi (7,359.63 km) |
| Iowa City to Carlet | 4,545.46 mi (7,315.22 km) |
