| Seaham to Santarem | 1,130.90 mi (1,820.01 km) |
| Seaham to Santiago do Cacem | 1,212.46 mi (1,951.26 km) |
| Seaham to Santo Andre | 1,210.90 mi (1,948.75 km) |
| Seaham to Santo Tirso | 988.25 mi (1,590.44 km) |
| Seaham to Sao Bras de Alportel | 1,260.63 mi (2,028.79 km) |
| Seaham to Sao Felix da Marinha | 1,010.40 mi (1,626.08 km) |
| Seaham to Sao Joao da Madeira | 1,017.46 mi (1,637.45 km) |
| Seaham to Sao Joao de Ver | 1,014.62 mi (1,632.87 km) |
| Seaham to Sao Mamede de Infesta | 999.08 mi (1,607.86 km) |
| Seaham to Sao Pedro do Sul | 1,021.22 mi (1,643.49 km) |
| Seaham to Satao | 1,017.82 mi (1,638.03 km) |
| Seaham to Seia | 1,038.25 mi (1,670.90 km) |
| Seaham to Senhora da Hora | 1,000.78 mi (1,610.60 km) |
| Seaham to Serpa | 1,203.68 mi (1,937.13 km) |
| Seaham to Serta | 1,085.10 mi (1,746.29 km) |
