| Iowa City to Cabestany | 4,555.81 mi (7,331.87 km) |
| Iowa City to Cabries | 4,624.84 mi (7,442.97 km) |
| Iowa City to Cachan | 4,295.39 mi (6,912.77 km) |
| Iowa City to Caen | 4,177.07 mi (6,722.35 km) |
| Iowa City to Cagnes-sur-Mer | 4,686.67 mi (7,542.46 km) |
| Iowa City to Cahors | 4,424.56 mi (7,120.64 km) |
| Iowa City to Calais | 4,198.66 mi (6,757.09 km) |
| Iowa City to Caluire-et-Cuire | 4,508.61 mi (7,255.91 km) |
| Iowa City to Cambrai | 4,278.21 mi (6,885.11 km) |
| Iowa City to Canet-en-Roussillon | 4,557.48 mi (7,334.55 km) |
| Iowa City to Cannes | 4,685.95 mi (7,541.31 km) |
| Iowa City to Canteleu | 4,221.57 mi (6,793.95 km) |
| Iowa City to Capbreton | 4,336.00 mi (6,978.12 km) |
| Iowa City to Carcassonne | 4,510.25 mi (7,258.55 km) |
| Iowa City to Carmaux | 4,469.39 mi (7,192.80 km) |
