| Iowa City to Cosham | 4,092.55 mi (6,586.33 km) |
| Iowa City to Costessey | 4,114.80 mi (6,622.13 km) |
| Iowa City to Cottingham | 4,018.11 mi (6,466.53 km) |
| Iowa City to Coulsdon | 4,111.09 mi (6,616.16 km) |
| Iowa City to Coventry | 4,023.35 mi (6,474.96 km) |
| Iowa City to Cowdenbeath | 3,841.59 mi (6,182.44 km) |
| Iowa City to Cowes | 4,086.48 mi (6,576.56 km) |
| Iowa City to Cowley | 4,091.19 mi (6,584.14 km) |
| Iowa City to Cowley | 4,056.81 mi (6,528.80 km) |
| Iowa City to Cramlington | 3,934.69 mi (6,332.27 km) |
| Iowa City to Cranleigh | 4,104.69 mi (6,605.87 km) |
| Iowa City to Crawley | 4,116.58 mi (6,624.99 km) |
| Iowa City to Crayford | 4,118.62 mi (6,628.28 km) |
| Iowa City to Crewe | 3,966.62 mi (6,383.65 km) |
| Iowa City to Crigglestone | 3,982.62 mi (6,409.40 km) |
