| Holyhead to Caldicot | 142.76 mi (229.74 km) |
| Holyhead to Calne | 170.27 mi (274.03 km) |
| Holyhead to Cam | 146.43 mi (235.66 km) |
| Holyhead to Camberley | 213.50 mi (343.59 km) |
| Holyhead to Camborne | 215.80 mi (347.30 km) |
| Holyhead to Cambridge | 212.79 mi (342.45 km) |
| Holyhead to Cambuslang | 174.42 mi (280.71 km) |
| Holyhead to Canford Cliffs | 213.77 mi (344.03 km) |
| Holyhead to Cannock | 116.46 mi (187.43 km) |
| Holyhead to Canterbury | 279.05 mi (449.09 km) |
| Holyhead to Carlisle | 128.95 mi (207.52 km) |
| Holyhead to Carlton Colville | 270.12 mi (434.72 km) |
| Holyhead to Carluke | 170.58 mi (274.53 km) |
| Holyhead to Carnoustie | 233.38 mi (375.58 km) |
| Holyhead to Carshalton | 231.40 mi (372.39 km) |
