| Rapid City to Solofra | 5,425.31 mi (8,731.19 km) |
| Rapid City to Somma Lombardo | 4,969.46 mi (7,997.57 km) |
| Rapid City to Somma Vesuviana | 5,409.25 mi (8,705.35 km) |
| Rapid City to Sommacampagna | 5,055.70 mi (8,136.36 km) |
| Rapid City to Sona | 5,053.47 mi (8,132.77 km) |
| Rapid City to Sondrio | 4,984.62 mi (8,021.98 km) |
| Rapid City to Sora | 5,337.28 mi (8,589.52 km) |
| Rapid City to Sorbolo | 5,070.11 mi (8,159.55 km) |
| Rapid City to Soresina | 5,028.17 mi (8,092.06 km) |
| Rapid City to Sorisole | 4,998.98 mi (8,045.09 km) |
| Rapid City to Sorrento | 5,419.95 mi (8,722.56 km) |
| Rapid City to Sorso | 5,207.82 mi (8,381.18 km) |
| Rapid City to Sortino | 5,625.59 mi (9,053.52 km) |
| Rapid City to Soverato Marina | 5,597.26 mi (9,007.93 km) |
| Rapid City to Sovicille | 5,175.65 mi (8,329.41 km) |
