| Iowa City to Corato | 5,160.07 mi (8,304.34 km) |
| Iowa City to Corbetta | 4,680.50 mi (7,532.54 km) |
| Iowa City to Corciano | 4,911.19 mi (7,903.79 km) |
| Iowa City to Cordenons | 4,801.36 mi (7,727.04 km) |
| Iowa City to Cori | 5,002.19 mi (8,050.24 km) |
| Iowa City to Coriano | 4,886.43 mi (7,863.95 km) |
| Iowa City to Corigliano Calabro | 5,237.22 mi (8,428.49 km) |
| Iowa City to Corleone | 5,191.70 mi (8,355.23 km) |
| Iowa City to Cormano | 4,686.60 mi (7,542.36 km) |
| Iowa City to Cornaredo | 4,683.59 mi (7,537.50 km) |
| Iowa City to Cornate d'Adda | 4,693.87 mi (7,554.06 km) |
| Iowa City to Cornedo Vicentino | 4,766.80 mi (7,671.42 km) |
| Iowa City to Correggio | 4,781.78 mi (7,695.53 km) |
| Iowa City to Corridonia | 4,953.42 mi (7,971.76 km) |
| Iowa City to Corsico | 4,689.60 mi (7,547.18 km) |
