| London Colney to Cascais | 1,001.64 mi (1,611.98 km) |
| London Colney to Castelo Branco | 891.97 mi (1,435.48 km) |
| London Colney to Castro Daire | 830.91 mi (1,337.23 km) |
| London Colney to Celorico de Basto | 801.76 mi (1,290.32 km) |
| London Colney to Chamusca | 940.95 mi (1,514.31 km) |
| London Colney to Chaves | 768.09 mi (1,236.13 km) |
| London Colney to Cinfaes | 822.46 mi (1,323.61 km) |
| London Colney to Coimbra | 884.93 mi (1,424.15 km) |
| London Colney to Condeixa-a-Nova | 892.39 mi (1,436.17 km) |
| London Colney to Corroios | 1,001.53 mi (1,611.81 km) |
| London Colney to Coruche | 967.04 mi (1,556.30 km) |
| London Colney to Costa de Caparica | 1,001.37 mi (1,611.55 km) |
| London Colney to Covilha | 861.81 mi (1,386.94 km) |
| London Colney to Eiras | 882.85 mi (1,420.81 km) |
| London Colney to Elvas | 947.79 mi (1,525.31 km) |
