| Swansea to Santarem | 4,210.20 mi (6,775.66 km) |
| Swansea to Santiago do Cacem | 4,249.17 mi (6,838.37 km) |
| Swansea to Santo Andre | 4,245.68 mi (6,832.76 km) |
| Swansea to Santo Tirso | 4,153.85 mi (6,684.97 km) |
| Swansea to Sao Bras de Alportel | 4,317.19 mi (6,947.84 km) |
| Swansea to Sao Felix da Marinha | 4,155.96 mi (6,688.37 km) |
| Swansea to Sao Joao da Madeira | 4,166.48 mi (6,705.30 km) |
| Swansea to Sao Joao de Ver | 4,161.81 mi (6,697.79 km) |
| Swansea to Sao Mamede de Infesta | 4,151.83 mi (6,681.73 km) |
| Swansea to Sao Pedro do Sul | 4,190.76 mi (6,744.38 km) |
| Swansea to Satao | 4,206.79 mi (6,770.17 km) |
| Swansea to Seia | 4,218.19 mi (6,788.51 km) |
| Swansea to Senhora da Hora | 4,149.91 mi (6,678.63 km) |
| Swansea to Serpa | 4,304.18 mi (6,926.90 km) |
| Swansea to Serta | 4,219.59 mi (6,790.77 km) |
