| Holyhead to Cascais | 1,034.57 mi (1,664.98 km) |
| Holyhead to Castelo Branco | 941.92 mi (1,515.88 km) |
| Holyhead to Castro Daire | 871.07 mi (1,401.85 km) |
| Holyhead to Celorico de Basto | 838.68 mi (1,349.73 km) |
| Holyhead to Chamusca | 981.44 mi (1,579.48 km) |
| Holyhead to Chaves | 810.03 mi (1,303.61 km) |
| Holyhead to Cinfaes | 859.14 mi (1,382.66 km) |
| Holyhead to Coimbra | 922.30 mi (1,484.30 km) |
| Holyhead to Condeixa-a-Nova | 929.37 mi (1,495.68 km) |
| Holyhead to Corroios | 1,037.67 mi (1,669.98 km) |
| Holyhead to Coruche | 1,008.62 mi (1,623.22 km) |
| Holyhead to Costa de Caparica | 1,036.48 mi (1,668.06 km) |
| Holyhead to Covilha | 909.96 mi (1,464.43 km) |
| Holyhead to Eiras | 920.15 mi (1,480.83 km) |
| Holyhead to Elvas | 1,004.97 mi (1,617.34 km) |
