| Mason City to Solofra | 5,110.86 mi (8,225.13 km) |
| Mason City to Somma Lombardo | 4,657.22 mi (7,495.07 km) |
| Mason City to Somma Vesuviana | 5,093.37 mi (8,196.99 km) |
| Mason City to Sommacampagna | 4,749.53 mi (7,643.63 km) |
| Mason City to Sona | 4,747.42 mi (7,640.23 km) |
| Mason City to Sondrio | 4,679.14 mi (7,530.34 km) |
| Mason City to Sora | 5,022.39 mi (8,082.75 km) |
| Mason City to Sorbolo | 4,759.54 mi (7,659.73 km) |
| Mason City to Soresina | 4,717.85 mi (7,592.64 km) |
| Mason City to Sorisole | 4,690.39 mi (7,548.45 km) |
| Mason City to Sorrento | 5,102.63 mi (8,211.90 km) |
| Mason City to Sorso | 4,869.72 mi (7,837.06 km) |
| Mason City to Sortino | 5,294.54 mi (8,520.73 km) |
| Mason City to Soverato Marina | 5,279.32 mi (8,496.25 km) |
| Mason City to Sovicille | 4,859.75 mi (7,821.01 km) |
