| Council Bluffs to Solofra | 5,300.16 mi (8,529.78 km) |
| Council Bluffs to Somma Lombardo | 4,846.58 mi (7,799.81 km) |
| Council Bluffs to Somma Vesuviana | 5,282.66 mi (8,501.61 km) |
| Council Bluffs to Sommacampagna | 4,938.92 mi (7,948.42 km) |
| Council Bluffs to Sona | 4,936.81 mi (7,945.02 km) |
| Council Bluffs to Sondrio | 4,868.53 mi (7,835.14 km) |
| Council Bluffs to Sora | 5,211.69 mi (8,387.41 km) |
| Council Bluffs to Sorbolo | 4,948.91 mi (7,964.49 km) |
| Council Bluffs to Soresina | 4,907.22 mi (7,897.40 km) |
| Council Bluffs to Sorisole | 4,879.77 mi (7,853.23 km) |
| Council Bluffs to Sorrento | 5,291.89 mi (8,516.47 km) |
| Council Bluffs to Sorso | 5,058.36 mi (8,140.65 km) |
| Council Bluffs to Sortino | 5,483.38 mi (8,824.65 km) |
| Council Bluffs to Soverato Marina | 5,468.55 mi (8,800.78 km) |
| Council Bluffs to Sovicille | 5,049.05 mi (8,125.66 km) |
