| Idil to Costessey | 2,211.67 mi (3,559.34 km) |
| Idil to Cottingham | 2,293.93 mi (3,691.73 km) |
| Idil to Coulsdon | 2,251.59 mi (3,623.58 km) |
| Idil to Coventry | 2,321.09 mi (3,735.43 km) |
| Idil to Cowdenbeath | 2,442.39 mi (3,930.64 km) |
| Idil to Cowes | 2,296.33 mi (3,695.59 km) |
| Idil to Cowley | 2,268.34 mi (3,650.55 km) |
| Idil to Cowley | 2,301.58 mi (3,704.04 km) |
| Idil to Cramlington | 2,359.46 mi (3,797.19 km) |
| Idil to Cranleigh | 2,264.26 mi (3,643.97 km) |
| Idil to Crawley | 2,251.49 mi (3,623.42 km) |
| Idil to Crayford | 2,239.35 mi (3,603.89 km) |
| Idil to Crewe | 2,367.08 mi (3,809.44 km) |
| Idil to Crigglestone | 2,336.44 mi (3,760.14 km) |
| Idil to Cromer | 2,212.18 mi (3,560.16 km) |
