| Clacton-on-Sea to Cascais | 1,037.88 mi (1,670.30 km) |
| Clacton-on-Sea to Castelo Branco | 924.76 mi (1,488.27 km) |
| Clacton-on-Sea to Castro Daire | 866.72 mi (1,394.85 km) |
| Clacton-on-Sea to Celorico de Basto | 838.64 mi (1,349.65 km) |
| Clacton-on-Sea to Chamusca | 975.76 mi (1,570.33 km) |
| Clacton-on-Sea to Chaves | 804.09 mi (1,294.06 km) |
| Clacton-on-Sea to Cinfaes | 859.18 mi (1,382.72 km) |
| Clacton-on-Sea to Coimbra | 920.94 mi (1,482.11 km) |
| Clacton-on-Sea to Condeixa-a-Nova | 928.44 mi (1,494.19 km) |
| Clacton-on-Sea to Corroios | 1,036.99 mi (1,668.87 km) |
| Clacton-on-Sea to Coruche | 1,001.39 mi (1,611.59 km) |
| Clacton-on-Sea to Costa de Caparica | 1,037.09 mi (1,669.03 km) |
| Clacton-on-Sea to Covilha | 895.33 mi (1,440.90 km) |
| Clacton-on-Sea to Eiras | 918.90 mi (1,478.83 km) |
| Clacton-on-Sea to Elvas | 978.23 mi (1,574.31 km) |
