| Swansea to Benavente | 4,213.43 mi (6,780.86 km) |
| Swansea to Bombarral | 4,186.88 mi (6,738.13 km) |
| Swansea to Bougado | 4,149.46 mi (6,677.91 km) |
| Swansea to Braga | 4,149.24 mi (6,677.56 km) |
| Swansea to Braganca | 4,217.48 mi (6,787.38 km) |
| Swansea to Cabeceiras de Basto | 4,168.38 mi (6,708.35 km) |
| Swansea to Cacem | 4,195.59 mi (6,752.16 km) |
| Swansea to Cadaval | 4,190.61 mi (6,744.14 km) |
| Swansea to Caldas da Rainha | 4,183.35 mi (6,732.46 km) |
| Swansea to Calheta | 4,001.20 mi (6,439.30 km) |
| Swansea to Camara de Lobos | 4,011.81 mi (6,456.39 km) |
| Swansea to Canico | 4,020.12 mi (6,469.76 km) |
| Swansea to Cantanhede | 4,178.97 mi (6,725.40 km) |
| Swansea to Carregal do Sal | 4,203.95 mi (6,765.61 km) |
| Swansea to Cartaxo | 4,208.30 mi (6,772.61 km) |
