| Iowa City to Butzbach | 4,466.71 mi (7,188.47 km) |
| Iowa City to Buxtehude | 4,381.57 mi (7,051.46 km) |
| Iowa City to Cadolzburg | 4,586.05 mi (7,380.54 km) |
| Iowa City to Calbe | 4,515.71 mi (7,267.34 km) |
| Iowa City to Calw | 4,538.94 mi (7,304.73 km) |
| Iowa City to Castrop-Rauxel | 4,374.70 mi (7,040.40 km) |
| Iowa City to Celle | 4,428.46 mi (7,126.92 km) |
| Iowa City to Cham | 4,659.39 mi (7,498.57 km) |
| Iowa City to Chemnitz | 4,599.72 mi (7,402.53 km) |
| Iowa City to Clausthal-Zellerfeld | 4,470.31 mi (7,194.27 km) |
| Iowa City to Cloppenburg | 4,349.84 mi (7,000.39 km) |
| Iowa City to Coburg | 4,555.58 mi (7,331.49 km) |
| Iowa City to Coesfeld | 4,353.88 mi (7,006.89 km) |
| Iowa City to Cologne | 4,385.59 mi (7,057.93 km) |
| Iowa City to Coswig | 4,609.74 mi (7,418.66 km) |
