| Seaford to Santarem | 903.82 mi (1,454.56 km) |
| Seaford to Santiago do Cacem | 980.82 mi (1,578.47 km) |
| Seaford to Santo Andre | 979.78 mi (1,576.81 km) |
| Seaford to Santo Tirso | 769.47 mi (1,238.34 km) |
| Seaford to Sao Bras de Alportel | 1,019.94 mi (1,641.44 km) |
| Seaford to Sao Felix da Marinha | 791.50 mi (1,273.79 km) |
| Seaford to Sao Joao da Madeira | 796.46 mi (1,281.77 km) |
| Seaford to Sao Joao de Ver | 794.54 mi (1,278.69 km) |
| Seaford to Sao Mamede de Infesta | 780.89 mi (1,256.72 km) |
| Seaford to Sao Pedro do Sul | 795.29 mi (1,279.90 km) |
| Seaford to Satao | 788.60 mi (1,269.13 km) |
| Seaford to Seia | 807.32 mi (1,299.26 km) |
| Seaford to Senhora da Hora | 783.03 mi (1,260.16 km) |
| Seaford to Serpa | 963.04 mi (1,549.87 km) |
| Seaford to Serta | 855.15 mi (1,376.23 km) |
