| Mercer Island to Santarem | 5,185.24 mi (8,344.84 km) |
| Mercer Island to Santiago do Cacem | 5,249.46 mi (8,448.18 km) |
| Mercer Island to Santo Andre | 5,245.95 mi (8,442.54 km) |
| Mercer Island to Santo Tirso | 5,081.45 mi (8,177.81 km) |
| Mercer Island to Sao Bras de Alportel | 5,324.11 mi (8,568.33 km) |
| Mercer Island to Sao Felix da Marinha | 5,092.04 mi (8,194.84 km) |
| Mercer Island to Sao Joao da Madeira | 5,103.78 mi (8,213.73 km) |
| Mercer Island to Sao Joao de Ver | 5,098.68 mi (8,205.54 km) |
| Mercer Island to Sao Mamede de Infesta | 5,084.04 mi (8,181.97 km) |
| Mercer Island to Sao Pedro do Sul | 5,125.74 mi (8,249.08 km) |
| Mercer Island to Satao | 5,137.77 mi (8,268.44 km) |
| Mercer Island to Seia | 5,155.38 mi (8,296.79 km) |
| Mercer Island to Senhora da Hora | 5,083.07 mi (8,180.41 km) |
| Mercer Island to Serpa | 5,291.33 mi (8,515.57 km) |
| Mercer Island to Serta | 5,175.12 mi (8,328.54 km) |
