| Idylwood to Cosham | 3,648.31 mi (5,871.39 km) |
| Idylwood to Costessey | 3,701.00 mi (5,956.19 km) |
| Idylwood to Cottingham | 3,613.25 mi (5,814.97 km) |
| Idylwood to Coulsdon | 3,675.95 mi (5,915.87 km) |
| Idylwood to Coventry | 3,597.22 mi (5,789.16 km) |
| Idylwood to Cowdenbeath | 3,459.55 mi (5,567.61 km) |
| Idylwood to Cowes | 3,640.41 mi (5,858.68 km) |
| Idylwood to Cowley | 3,657.42 mi (5,886.06 km) |
| Idylwood to Cowley | 3,623.11 mi (5,830.83 km) |
| Idylwood to Cramlington | 3,543.48 mi (5,702.68 km) |
| Idylwood to Cranleigh | 3,666.10 mi (5,900.01 km) |
| Idylwood to Crawley | 3,678.66 mi (5,920.23 km) |
| Idylwood to Crayford | 3,686.17 mi (5,932.32 km) |
| Idylwood to Crewe | 3,546.44 mi (5,707.44 km) |
| Idylwood to Crigglestone | 3,572.44 mi (5,749.29 km) |
