| Ionia to Solofra | 4,801.37 mi (7,727.05 km) |
| Ionia to Somma Lombardo | 4,352.29 mi (7,004.33 km) |
| Ionia to Somma Vesuviana | 4,783.00 mi (7,697.50 km) |
| Ionia to Sommacampagna | 4,448.29 mi (7,158.83 km) |
| Ionia to Sona | 4,446.28 mi (7,155.59 km) |
| Ionia to Sondrio | 4,378.89 mi (7,047.14 km) |
| Ionia to Sora | 4,713.15 mi (7,585.09 km) |
| Ionia to Sorbolo | 4,455.09 mi (7,169.77 km) |
| Ionia to Soresina | 4,413.86 mi (7,103.42 km) |
| Ionia to Sorisole | 4,387.83 mi (7,061.53 km) |
| Ionia to Sorrento | 4,791.20 mi (7,710.70 km) |
| Ionia to Sorso | 4,545.27 mi (7,314.91 km) |
| Ionia to Sortino | 4,972.53 mi (8,002.51 km) |
| Ionia to Soverato Marina | 4,966.39 mi (7,992.63 km) |
| Ionia to Sovicille | 4,550.85 mi (7,323.89 km) |
