| Iowa City to Collegno | 4,644.64 mi (7,474.83 km) |
| Iowa City to Cologno al Serio | 4,705.61 mi (7,572.95 km) |
| Iowa City to Cologno Monzese | 4,691.79 mi (7,550.70 km) |
| Iowa City to Colorno | 4,759.48 mi (7,659.64 km) |
| Iowa City to Comacchio | 4,838.24 mi (7,786.40 km) |
| Iowa City to Comiso | 5,284.80 mi (8,505.07 km) |
| Iowa City to Como | 4,672.57 mi (7,519.78 km) |
| Iowa City to Concordia Sagittaria | 4,816.43 mi (7,751.30 km) |
| Iowa City to Concorezzo | 4,691.41 mi (7,550.10 km) |
| Iowa City to Conegliano | 4,790.60 mi (7,709.72 km) |
| Iowa City to Conselice | 4,832.97 mi (7,777.91 km) |
| Iowa City to Conselve | 4,802.93 mi (7,729.58 km) |
| Iowa City to Conversano | 5,196.10 mi (8,362.31 km) |
| Iowa City to Copertino | 5,264.89 mi (8,473.02 km) |
| Iowa City to Copparo | 4,816.21 mi (7,750.94 km) |
