| Holyhead to Clacton-on-Sea | 264.35 mi (425.42 km) |
| Holyhead to Clay Cross | 133.53 mi (214.90 km) |
| Holyhead to Clayton | 120.27 mi (193.55 km) |
| Holyhead to Clayton le Moors | 97.79 mi (157.37 km) |
| Holyhead to Cleckheaton | 123.10 mi (198.12 km) |
| Holyhead to Cleethorpes | 190.55 mi (306.66 km) |
| Holyhead to Clevedon | 149.46 mi (240.54 km) |
| Holyhead to Clifton | 146.04 mi (235.03 km) |
| Holyhead to Clifton | 151.86 mi (244.40 km) |
| Holyhead to Cliftonville | 287.19 mi (462.18 km) |
| Holyhead to Clitheroe | 99.78 mi (160.59 km) |
| Holyhead to Clydebank | 179.24 mi (288.46 km) |
| Holyhead to Coalville | 141.55 mi (227.80 km) |
| Holyhead to Coatbridge | 178.09 mi (286.61 km) |
| Holyhead to Cobham | 224.75 mi (361.70 km) |
