| Southborough to Sereflikochisar | 1,809.16 mi (2,911.56 km) |
| Southborough to Serik | 1,800.11 mi (2,897.00 km) |
| Southborough to Serinhisar | 1,695.17 mi (2,728.11 km) |
| Southborough to Serinyol | 2,035.13 mi (3,275.22 km) |
| Southborough to Seydisehir | 1,807.27 mi (2,908.52 km) |
| Southborough to Seyhan | 1,970.92 mi (3,171.88 km) |
| Southborough to Seyitgazi | 1,668.73 mi (2,685.56 km) |
| Southborough to Siirt | 2,209.76 mi (3,556.27 km) |
| Southborough to Sile | 1,550.49 mi (2,495.27 km) |
| Southborough to Silifke | 1,940.88 mi (3,123.54 km) |
| Southborough to Silivri | 1,497.83 mi (2,410.53 km) |
| Southborough to Silopi | 2,261.31 mi (3,639.22 km) |
| Southborough to Simav | 1,614.45 mi (2,598.21 km) |
| Southborough to Sinanpasa | 1,681.18 mi (2,705.60 km) |
| Southborough to Sindirgi | 1,574.54 mi (2,533.98 km) |
