| Ferentino to Somma Lombardo | 357.74 mi (575.72 km) |
| Ferentino to Somma Vesuviana | 83.28 mi (134.03 km) |
| Ferentino to Sommacampagna | 283.50 mi (456.26 km) |
| Ferentino to Sona | 285.93 mi (460.16 km) |
| Ferentino to Sondrio | 352.59 mi (567.44 km) |
| Ferentino to Sora | 19.06 mi (30.67 km) |
| Ferentino to Sorbolo | 260.01 mi (418.45 km) |
| Ferentino to Soresina | 301.45 mi (485.14 km) |
| Ferentino to Sorisole | 332.60 mi (535.27 km) |
| Ferentino to Sorrento | 93.46 mi (150.41 km) |
| Ferentino to Sorso | 250.32 mi (402.85 km) |
| Ferentino to Sortino | 326.24 mi (525.03 km) |
| Ferentino to Soverato Marina | 270.71 mi (435.66 km) |
| Ferentino to Sovicille | 150.92 mi (242.89 km) |
| Ferentino to Spello | 94.91 mi (152.75 km) |
