| Holyhead to Campo de Criptana | 963.68 mi (1,550.89 km) |
| Holyhead to Campos del Puerto | 1,024.54 mi (1,648.84 km) |
| Holyhead to Canals | 1,009.69 mi (1,624.94 km) |
| Holyhead to Candelaria | 1,824.62 mi (2,936.45 km) |
| Holyhead to Canet de Mar | 875.94 mi (1,409.69 km) |
| Holyhead to Cangas | 786.71 mi (1,266.08 km) |
| Holyhead to Cangas de Narcea | 705.84 mi (1,135.94 km) |
| Holyhead to Canovellas | 868.98 mi (1,398.49 km) |
| Holyhead to Canteras | 1,098.05 mi (1,767.13 km) |
| Holyhead to Cantillana | 1,086.86 mi (1,749.14 km) |
| Holyhead to Capdepera | 1,013.98 mi (1,631.85 km) |
| Holyhead to Carballo | 721.47 mi (1,161.09 km) |
| Holyhead to Carcagente | 999.97 mi (1,609.30 km) |
| Holyhead to Cardedeu | 868.82 mi (1,398.23 km) |
| Holyhead to Carlet | 992.21 mi (1,596.81 km) |
