| Houilles to Somma Lombardo | 378.27 mi (608.76 km) |
| Houilles to Somma Vesuviana | 816.03 mi (1,313.28 km) |
| Houilles to Sommacampagna | 473.80 mi (762.51 km) |
| Houilles to Sona | 471.85 mi (759.36 km) |
| Houilles to Sondrio | 405.42 mi (652.45 km) |
| Houilles to Sora | 744.42 mi (1,198.03 km) |
| Houilles to Sorbolo | 480.78 mi (773.75 km) |
| Houilles to Soresina | 439.28 mi (706.96 km) |
| Houilles to Sorisole | 413.00 mi (664.67 km) |
| Houilles to Sorrento | 826.27 mi (1,329.75 km) |
| Houilles to Sorso | 642.29 mi (1,033.67 km) |
| Houilles to Sortino | 1,036.62 mi (1,668.28 km) |
| Houilles to Soverato Marina | 1,003.60 mi (1,615.14 km) |
| Houilles to Sovicille | 582.13 mi (936.85 km) |
| Houilles to Spello | 648.46 mi (1,043.60 km) |
