| Holyhead to Cehegin | 1,060.00 mi (1,705.90 km) |
| Holyhead to Cervello | 878.11 mi (1,413.18 km) |
| Holyhead to Cervera | 849.67 mi (1,367.40 km) |
| Holyhead to Ceuti | 1,064.42 mi (1,713.02 km) |
| Holyhead to Cheste | 973.48 mi (1,566.66 km) |
| Holyhead to Chiclana de la Frontera | 1,169.44 mi (1,882.03 km) |
| Holyhead to Chipiona | 1,148.55 mi (1,848.40 km) |
| Holyhead to Chiva | 973.73 mi (1,567.06 km) |
| Holyhead to Churriana de la Vega | 1,117.48 mi (1,798.40 km) |
| Holyhead to Ciempozuelos | 909.81 mi (1,464.20 km) |
| Holyhead to Cieza | 1,052.40 mi (1,693.68 km) |
| Holyhead to Cisterniga | 807.86 mi (1,300.13 km) |
| Holyhead to Ciudad de Melilla | 1,248.21 mi (2,008.80 km) |
| Holyhead to Ciudad Real | 990.39 mi (1,593.88 km) |
| Holyhead to Ciudad-Rodrigo | 882.83 mi (1,420.77 km) |
