| Hilton Head Island to Solofra | 5,070.81 mi (8,160.68 km) |
| Hilton Head Island to Somma Lombardo | 4,646.00 mi (7,477.01 km) |
| Hilton Head Island to Somma Vesuviana | 5,050.52 mi (8,128.03 km) |
| Hilton Head Island to Sommacampagna | 4,748.96 mi (7,642.71 km) |
| Hilton Head Island to Sona | 4,747.26 mi (7,639.98 km) |
| Hilton Head Island to Sondrio | 4,684.01 mi (7,538.18 km) |
| Hilton Head Island to Sora | 4,985.60 mi (8,023.54 km) |
| Hilton Head Island to Sorbolo | 4,747.23 mi (7,639.92 km) |
| Hilton Head Island to Soresina | 4,708.34 mi (7,577.34 km) |
| Hilton Head Island to Sorisole | 4,686.75 mi (7,542.59 km) |
| Hilton Head Island to Sorrento | 5,055.61 mi (8,136.22 km) |
| Hilton Head Island to Sorso | 4,779.15 mi (7,691.30 km) |
| Hilton Head Island to Sortino | 5,202.22 mi (8,372.16 km) |
| Hilton Head Island to Soverato Marina | 5,222.11 mi (8,404.17 km) |
| Hilton Head Island to Sovicille | 4,828.53 mi (7,770.77 km) |
