| Langley Park to Solofra | 4,621.18 mi (7,437.06 km) |
| Langley Park to Somma Lombardo | 4,186.31 mi (6,737.21 km) |
| Langley Park to Somma Vesuviana | 4,601.47 mi (7,405.35 km) |
| Langley Park to Sommacampagna | 4,287.47 mi (6,900.01 km) |
| Langley Park to Sona | 4,285.66 mi (6,897.10 km) |
| Langley Park to Sondrio | 4,220.81 mi (6,792.73 km) |
| Langley Park to Sora | 4,534.55 mi (7,297.66 km) |
| Langley Park to Sorbolo | 4,288.50 mi (6,901.68 km) |
| Langley Park to Soresina | 4,248.68 mi (6,837.59 km) |
| Langley Park to Sorisole | 4,225.55 mi (6,800.37 km) |
| Langley Park to Sorrento | 4,607.67 mi (7,415.33 km) |
| Langley Park to Sorso | 4,340.93 mi (6,986.06 km) |
| Langley Park to Sortino | 4,767.55 mi (7,672.63 km) |
| Langley Park to Soverato Marina | 4,777.98 mi (7,689.41 km) |
| Langley Park to Sovicille | 4,375.00 mi (7,040.89 km) |
