| Mercer Island to Sangeorgiu de Mures | 5,630.44 mi (9,061.32 km) |
| Mercer Island to Sangeorz-Bai | 5,581.66 mi (8,982.81 km) |
| Mercer Island to Sannicolau Mare | 5,588.89 mi (8,994.45 km) |
| Mercer Island to Santana | 5,588.16 mi (8,993.28 km) |
| Mercer Island to Satu Mare | 5,522.93 mi (8,888.30 km) |
| Mercer Island to Scobinti | 5,618.92 mi (9,042.77 km) |
| Mercer Island to Scornicesti | 5,758.86 mi (9,267.99 km) |
| Mercer Island to Sebes | 5,651.94 mi (9,095.92 km) |
| Mercer Island to Seini | 5,532.77 mi (8,904.14 km) |
| Mercer Island to Sfantu-Gheorghe | 5,697.76 mi (9,169.66 km) |
| Mercer Island to Sibiu | 5,673.26 mi (9,130.24 km) |
| Mercer Island to Sighetu Marmatiei | 5,532.08 mi (8,903.02 km) |
| Mercer Island to Sighisoara | 5,657.56 mi (9,104.97 km) |
| Mercer Island to Simeria | 5,648.56 mi (9,090.48 km) |
| Mercer Island to Sinaia | 5,726.72 mi (9,216.27 km) |
