| Keystone to Caldicot | 4,299.32 mi (6,919.08 km) |
| Keystone to Calne | 4,332.78 mi (6,972.94 km) |
| Keystone to Cam | 4,314.02 mi (6,942.75 km) |
| Keystone to Camberley | 4,387.51 mi (7,061.01 km) |
| Keystone to Camborne | 4,207.59 mi (6,771.47 km) |
| Keystone to Cambridge | 4,410.07 mi (7,097.33 km) |
| Keystone to Cambuslang | 4,193.91 mi (6,749.44 km) |
| Keystone to Canford Cliffs | 4,346.55 mi (6,995.09 km) |
| Keystone to Cannock | 4,314.69 mi (6,943.83 km) |
| Keystone to Canterbury | 4,464.95 mi (7,185.64 km) |
| Keystone to Carlisle | 4,250.94 mi (6,841.23 km) |
| Keystone to Carlton Colville | 4,470.64 mi (7,194.79 km) |
| Keystone to Carluke | 4,207.54 mi (6,771.38 km) |
| Keystone to Carnoustie | 4,242.68 mi (6,827.93 km) |
| Keystone to Carshalton | 4,411.20 mi (7,099.14 km) |
