| Gaithersburg to Solofra | 4,625.72 mi (7,444.37 km) |
| Gaithersburg to Somma Lombardo | 4,190.26 mi (6,743.57 km) |
| Gaithersburg to Somma Vesuviana | 4,606.05 mi (7,412.73 km) |
| Gaithersburg to Sommacampagna | 4,291.28 mi (6,906.15 km) |
| Gaithersburg to Sona | 4,289.46 mi (6,903.22 km) |
| Gaithersburg to Sondrio | 4,224.51 mi (6,798.69 km) |
| Gaithersburg to Sora | 4,539.02 mi (7,304.85 km) |
| Gaithersburg to Sorbolo | 4,292.51 mi (6,908.12 km) |
| Gaithersburg to Soresina | 4,252.62 mi (6,843.94 km) |
| Gaithersburg to Sorisole | 4,229.39 mi (6,806.55 km) |
| Gaithersburg to Sorrento | 4,612.32 mi (7,422.81 km) |
| Gaithersburg to Sorso | 4,346.20 mi (6,994.54 km) |
| Gaithersburg to Sortino | 4,772.95 mi (7,681.31 km) |
| Gaithersburg to Soverato Marina | 4,782.83 mi (7,697.22 km) |
| Gaithersburg to Sovicille | 4,379.34 mi (7,047.86 km) |
