| Iowa City to Clacton-on-Sea | 4,142.45 mi (6,666.62 km) |
| Iowa City to Clay Cross | 4,002.18 mi (6,440.89 km) |
| Iowa City to Clayton | 3,967.65 mi (6,385.32 km) |
| Iowa City to Clayton le Moors | 3,947.19 mi (6,352.39 km) |
| Iowa City to Cleckheaton | 3,972.90 mi (6,393.76 km) |
| Iowa City to Cleethorpes | 4,039.78 mi (6,501.39 km) |
| Iowa City to Clevedon | 4,004.81 mi (6,445.12 km) |
| Iowa City to Clifton | 4,019.31 mi (6,468.46 km) |
| Iowa City to Clifton | 3,987.35 mi (6,417.01 km) |
| Iowa City to Cliftonville | 4,166.22 mi (6,704.88 km) |
| Iowa City to Clitheroe | 3,943.88 mi (6,347.07 km) |
| Iowa City to Clydebank | 3,810.89 mi (6,133.03 km) |
| Iowa City to Coalville | 4,018.18 mi (6,466.64 km) |
| Iowa City to Coatbridge | 3,825.13 mi (6,155.95 km) |
| Iowa City to Cobham | 4,100.69 mi (6,599.42 km) |
