| Iowa City to Caldicot | 4,003.79 mi (6,443.47 km) |
| Iowa City to Calne | 4,036.96 mi (6,496.85 km) |
| Iowa City to Cam | 4,014.72 mi (6,461.07 km) |
| Iowa City to Camberley | 4,087.99 mi (6,578.99 km) |
| Iowa City to Camborne | 3,949.94 mi (6,356.81 km) |
| Iowa City to Cambridge | 4,090.34 mi (6,582.77 km) |
| Iowa City to Cambuslang | 3,821.44 mi (6,150.02 km) |
| Iowa City to Canford Cliffs | 4,064.48 mi (6,541.16 km) |
| Iowa City to Cannock | 3,994.99 mi (6,429.31 km) |
| Iowa City to Canterbury | 4,157.99 mi (6,691.63 km) |
| Iowa City to Carlisle | 3,892.40 mi (6,264.22 km) |
| Iowa City to Carlton Colville | 4,139.21 mi (6,661.42 km) |
| Iowa City to Carluke | 3,835.66 mi (6,172.89 km) |
| Iowa City to Carnoustie | 3,852.25 mi (6,199.59 km) |
| Iowa City to Carshalton | 4,108.49 mi (6,611.97 km) |
