| Portsmouth to Cascais | 929.54 mi (1,495.95 km) |
| Portsmouth to Castelo Branco | 819.95 mi (1,319.59 km) |
| Portsmouth to Castro Daire | 758.80 mi (1,221.17 km) |
| Portsmouth to Celorico de Basto | 729.68 mi (1,174.30 km) |
| Portsmouth to Chamusca | 868.84 mi (1,398.26 km) |
| Portsmouth to Chaves | 695.98 mi (1,120.07 km) |
| Portsmouth to Cinfaes | 750.37 mi (1,207.60 km) |
| Portsmouth to Coimbra | 812.82 mi (1,308.10 km) |
| Portsmouth to Condeixa-a-Nova | 820.29 mi (1,320.12 km) |
| Portsmouth to Corroios | 929.42 mi (1,495.75 km) |
| Portsmouth to Coruche | 894.94 mi (1,440.27 km) |
| Portsmouth to Costa de Caparica | 929.26 mi (1,495.50 km) |
| Portsmouth to Covilha | 789.75 mi (1,270.98 km) |
| Portsmouth to Eiras | 810.74 mi (1,304.76 km) |
| Portsmouth to Elvas | 876.02 mi (1,409.82 km) |
