| Keystone to Cosham | 4,381.29 mi (7,051.00 km) |
| Keystone to Costessey | 4,447.88 mi (7,158.17 km) |
| Keystone to Cottingham | 4,365.14 mi (7,025.02 km) |
| Keystone to Coulsdon | 4,413.11 mi (7,102.22 km) |
| Keystone to Coventry | 4,339.82 mi (6,984.26 km) |
| Keystone to Cowdenbeath | 4,222.38 mi (6,795.26 km) |
| Keystone to Cowes | 4,372.57 mi (7,036.97 km) |
| Keystone to Cowley | 4,395.53 mi (7,073.92 km) |
| Keystone to Cowley | 4,361.73 mi (7,019.52 km) |
| Keystone to Cramlington | 4,301.81 mi (6,923.09 km) |
| Keystone to Cranleigh | 4,401.68 mi (7,083.82 km) |
| Keystone to Crawley | 4,414.41 mi (7,104.30 km) |
| Keystone to Crayford | 4,424.51 mi (7,120.56 km) |
| Keystone to Crewe | 4,292.48 mi (6,908.07 km) |
| Keystone to Crigglestone | 4,322.57 mi (6,956.50 km) |
