| South Sioux City to Saarijarvi | 4,492.35 mi (7,229.75 km) |
| South Sioux City to Salo | 4,558.12 mi (7,335.59 km) |
| South Sioux City to Sastamala | 4,506.19 mi (7,252.02 km) |
| South Sioux City to Savonlinna | 4,613.62 mi (7,424.90 km) |
| South Sioux City to Seinajoki | 4,434.28 mi (7,136.29 km) |
| South Sioux City to Siilinjarvi | 4,525.25 mi (7,282.69 km) |
| South Sioux City to Sipoo | 4,609.43 mi (7,418.16 km) |
| South Sioux City to Sippola | 4,630.65 mi (7,452.31 km) |
| South Sioux City to Sodankyla | 4,285.61 mi (6,897.03 km) |
| South Sioux City to Somero | 4,555.30 mi (7,331.04 km) |
| South Sioux City to Sotkamo | 4,485.87 mi (7,219.31 km) |
| South Sioux City to Tampere | 4,518.38 mi (7,271.62 km) |
| South Sioux City to Tornio | 4,314.74 mi (6,943.90 km) |
| South Sioux City to Turku | 4,534.31 mi (7,297.27 km) |
| South Sioux City to Tuusula | 4,601.37 mi (7,405.20 km) |
