| Iowa City to Chojnice | 4,627.78 mi (7,447.70 km) |
| Iowa City to Chojnow | 4,683.07 mi (7,536.67 km) |
| Iowa City to Chorzow | 4,826.50 mi (7,767.50 km) |
| Iowa City to Choszczno | 4,583.17 mi (7,375.90 km) |
| Iowa City to Chrzanow | 4,848.99 mi (7,803.70 km) |
| Iowa City to Ciechanow | 4,761.65 mi (7,663.14 km) |
| Iowa City to Ciechocinek | 4,703.15 mi (7,568.98 km) |
| Iowa City to Cieszyn | 4,841.33 mi (7,791.36 km) |
| Iowa City to Czarna Bialostocka | 4,821.79 mi (7,759.92 km) |
| Iowa City to Czarnkow | 4,631.87 mi (7,454.27 km) |
| Iowa City to Czechowice-Dziedzice | 4,846.20 mi (7,799.20 km) |
| Iowa City to Czeladz | 4,829.34 mi (7,772.08 km) |
| Iowa City to Czersk Pomorski | 4,636.92 mi (7,462.41 km) |
| Iowa City to Czestochowa | 4,808.94 mi (7,739.24 km) |
| Iowa City to Czluchow | 4,623.50 mi (7,440.80 km) |
