| Twickenham to Cascais | 984.24 mi (1,583.99 km) |
| Twickenham to Castelo Branco | 874.03 mi (1,406.62 km) |
| Twickenham to Castro Daire | 813.41 mi (1,309.06 km) |
| Twickenham to Celorico de Basto | 784.43 mi (1,262.42 km) |
| Twickenham to Chamusca | 923.32 mi (1,485.93 km) |
| Twickenham to Chaves | 750.61 mi (1,207.99 km) |
| Twickenham to Cinfaes | 805.11 mi (1,295.69 km) |
| Twickenham to Coimbra | 867.47 mi (1,396.06 km) |
| Twickenham to Condeixa-a-Nova | 874.95 mi (1,408.09 km) |
| Twickenham to Corroios | 984.01 mi (1,583.61 km) |
| Twickenham to Coruche | 949.34 mi (1,527.82 km) |
| Twickenham to Costa de Caparica | 983.89 mi (1,583.42 km) |
| Twickenham to Covilha | 843.97 mi (1,358.24 km) |
| Twickenham to Eiras | 865.40 mi (1,392.73 km) |
| Twickenham to Elvas | 929.57 mi (1,496.00 km) |
