| Swansea to Cascais | 4,192.68 mi (6,747.47 km) |
| Swansea to Castelo Branco | 4,247.19 mi (6,835.18 km) |
| Swansea to Castro Daire | 4,192.20 mi (6,746.70 km) |
| Swansea to Celorico de Basto | 4,173.85 mi (6,717.17 km) |
| Swansea to Chamusca | 4,216.05 mi (6,785.07 km) |
| Swansea to Chaves | 4,186.94 mi (6,738.23 km) |
| Swansea to Cinfaes | 4,176.60 mi (6,721.60 km) |
| Swansea to Coimbra | 4,190.98 mi (6,744.73 km) |
| Swansea to Condeixa-a-Nova | 4,190.67 mi (6,744.23 km) |
| Swansea to Corroios | 4,208.12 mi (6,772.31 km) |
| Swansea to Coruche | 4,226.71 mi (6,802.23 km) |
| Swansea to Costa de Caparica | 4,203.11 mi (6,764.25 km) |
| Swansea to Covilha | 4,232.08 mi (6,810.87 km) |
| Swansea to Eiras | 4,190.24 mi (6,743.54 km) |
| Swansea to Elvas | 4,294.82 mi (6,911.84 km) |
