| Slough to Cascais | 982.47 mi (1,581.14 km) |
| Slough to Castelo Branco | 873.09 mi (1,405.11 km) |
| Slough to Castro Daire | 811.80 mi (1,306.47 km) |
| Slough to Celorico de Basto | 782.58 mi (1,259.44 km) |
| Slough to Chamusca | 921.90 mi (1,483.65 km) |
| Slough to Chaves | 748.97 mi (1,205.36 km) |
| Slough to Cinfaes | 803.28 mi (1,292.75 km) |
| Slough to Coimbra | 865.79 mi (1,393.35 km) |
| Slough to Condeixa-a-Nova | 873.25 mi (1,405.37 km) |
| Slough to Corroios | 982.42 mi (1,581.05 km) |
| Slough to Coruche | 948.02 mi (1,525.70 km) |
| Slough to Costa de Caparica | 982.24 mi (1,580.77 km) |
| Slough to Covilha | 842.87 mi (1,356.48 km) |
| Slough to Eiras | 863.71 mi (1,390.01 km) |
| Slough to Elvas | 929.14 mi (1,495.30 km) |
