| Mercer Island to Sabadell | 5,402.42 mi (8,694.35 km) |
| Mercer Island to Sabinanigo | 5,274.28 mi (8,488.13 km) |
| Mercer Island to Sagunto | 5,436.09 mi (8,748.54 km) |
| Mercer Island to Salamanca | 5,193.59 mi (8,358.27 km) |
| Mercer Island to Salobrena | 5,492.34 mi (8,839.06 km) |
| Mercer Island to Salou | 5,399.97 mi (8,690.42 km) |
| Mercer Island to Salt | 5,397.95 mi (8,687.17 km) |
| Mercer Island to Salvatierra de Mino | 5,040.74 mi (8,112.29 km) |
| Mercer Island to Sama | 5,067.31 mi (8,155.04 km) |
| Mercer Island to San Adrian de Besos | 5,412.37 mi (8,710.37 km) |
| Mercer Island to San Agustin de Guadalix | 5,275.29 mi (8,489.76 km) |
| Mercer Island to San Andres de la Barca | 5,404.28 mi (8,697.34 km) |
| Mercer Island to San Andres de Llevaneras | 5,412.01 mi (8,709.79 km) |
| Mercer Island to San Andres del Rabanedo | 5,106.66 mi (8,218.38 km) |
| Mercer Island to San Bartolome | 5,523.09 mi (8,888.55 km) |
