| Council Bluffs to Sestu | 5,146.60 mi (8,282.66 km) |
| Council Bluffs to Settimo Torinese | 4,835.43 mi (7,781.87 km) |
| Council Bluffs to Seveso | 4,864.64 mi (7,828.89 km) |
| Council Bluffs to Sezze | 5,201.00 mi (8,370.21 km) |
| Council Bluffs to Siano | 5,295.74 mi (8,522.68 km) |
| Council Bluffs to Siena | 5,051.16 mi (8,129.06 km) |
| Council Bluffs to Signa | 5,021.27 mi (8,080.96 km) |
| Council Bluffs to Silea | 4,980.28 mi (8,014.98 km) |
| Council Bluffs to Silvi Paese | 5,191.21 mi (8,354.45 km) |
| Council Bluffs to Sinalunga | 5,070.96 mi (8,160.92 km) |
| Council Bluffs to Siniscola | 5,112.87 mi (8,228.36 km) |
| Council Bluffs to Sinnai | 5,150.94 mi (8,289.64 km) |
| Council Bluffs to Siracusa | 5,498.10 mi (8,848.33 km) |
| Council Bluffs to Solaro | 4,863.90 mi (7,827.69 km) |
| Council Bluffs to Soliera | 4,971.48 mi (8,000.83 km) |
