| Southend to Solofra | 999.38 mi (1,608.35 km) |
| Southend to Somma Lombardo | 544.81 mi (876.79 km) |
| Southend to Somma Vesuviana | 984.18 mi (1,583.89 km) |
| Southend to Sommacampagna | 628.47 mi (1,011.42 km) |
| Southend to Sona | 626.25 mi (1,007.85 km) |
| Southend to Sondrio | 557.43 mi (897.10 km) |
| Southend to Sora | 911.98 mi (1,467.69 km) |
| Southend to Sorbolo | 643.69 mi (1,035.92 km) |
| Southend to Soresina | 601.81 mi (968.51 km) |
| Southend to Sorisole | 572.02 mi (920.58 km) |
| Southend to Sorrento | 995.80 mi (1,602.59 km) |
| Southend to Sorso | 831.65 mi (1,338.42 km) |
| Southend to Sortino | 1,215.24 mi (1,955.73 km) |
| Southend to Soverato Marina | 1,172.50 mi (1,886.96 km) |
| Southend to Sovicille | 752.34 mi (1,210.77 km) |
