| Round Rock to Cromer | 4,910.63 mi (7,902.90 km) |
| Round Rock to Crosby | 4,731.30 mi (7,614.28 km) |
| Round Rock to Crowborough | 4,923.15 mi (7,923.04 km) |
| Round Rock to Croxley Green | 4,882.17 mi (7,857.10 km) |
| Round Rock to Croydon | 4,903.29 mi (7,891.08 km) |
| Round Rock to Cudworth | 4,789.94 mi (7,708.66 km) |
| Round Rock to Culcheth | 4,751.67 mi (7,647.08 km) |
| Round Rock to Cullercoats | 4,749.19 mi (7,643.08 km) |
| Round Rock to Cumbernauld | 4,632.59 mi (7,455.44 km) |
| Round Rock to Cumnock | 4,634.97 mi (7,459.27 km) |
| Round Rock to Cupar | 4,658.48 mi (7,497.10 km) |
| Round Rock to Cwmbran | 4,781.28 mi (7,694.72 km) |
| Round Rock to Dagenham | 4,908.13 mi (7,898.87 km) |
| Round Rock to Dalkeith | 4,667.57 mi (7,511.72 km) |
| Round Rock to Darfield | 4,792.33 mi (7,712.51 km) |
