| Iowa City to Carpentras | 4,586.49 mi (7,381.24 km) |
| Iowa City to Carquefou | 4,199.74 mi (6,758.83 km) |
| Iowa City to Carqueiranne | 4,667.13 mi (7,511.02 km) |
| Iowa City to Carrieres-sous-Poissy | 4,278.37 mi (6,885.37 km) |
| Iowa City to Carrieres-sur-Seine | 4,289.33 mi (6,903.01 km) |
| Iowa City to Carros | 4,683.93 mi (7,538.06 km) |
| Iowa City to Carvin | 4,256.18 mi (6,849.66 km) |
| Iowa City to Castanet-Tolosan | 4,463.03 mi (7,182.56 km) |
| Iowa City to Castelginest | 4,453.41 mi (7,167.07 km) |
| Iowa City to Castelnau-le-Lez | 4,556.94 mi (7,333.69 km) |
| Iowa City to Castelnaudary | 4,489.62 mi (7,225.34 km) |
| Iowa City to Castelsarrasin | 4,426.56 mi (7,123.86 km) |
| Iowa City to Castres | 4,490.77 mi (7,227.19 km) |
| Iowa City to Caudebec-les-Elbeuf | 4,227.15 mi (6,802.93 km) |
| Iowa City to Caudry | 4,286.70 mi (6,898.78 km) |
