| Keystone to Cromer | 4,447.01 mi (7,156.77 km) |
| Keystone to Crosby | 4,263.54 mi (6,861.51 km) |
| Keystone to Crowborough | 4,429.85 mi (7,129.16 km) |
| Keystone to Croxley Green | 4,395.21 mi (7,073.41 km) |
| Keystone to Croydon | 4,413.51 mi (7,102.85 km) |
| Keystone to Cudworth | 4,327.77 mi (6,964.87 km) |
| Keystone to Culcheth | 4,284.72 mi (6,895.59 km) |
| Keystone to Cullercoats | 4,308.33 mi (6,933.59 km) |
| Keystone to Cumbernauld | 4,199.36 mi (6,758.22 km) |
| Keystone to Cumnock | 4,193.64 mi (6,749.01 km) |
| Keystone to Cupar | 4,233.19 mi (6,812.66 km) |
| Keystone to Cwmbran | 4,287.05 mi (6,899.35 km) |
| Keystone to Dagenham | 4,421.44 mi (7,115.62 km) |
| Keystone to Dalkeith | 4,235.70 mi (6,816.71 km) |
| Keystone to Darfield | 4,329.67 mi (6,967.93 km) |
