| Avellino to Somma Lombardo | 449.41 mi (723.25 km) |
| Avellino to Somma Vesuviana | 18.64 mi (29.99 km) |
| Avellino to Sommacampagna | 367.81 mi (591.94 km) |
| Avellino to Sona | 370.17 mi (595.74 km) |
| Avellino to Sondrio | 438.46 mi (705.63 km) |
| Avellino to Sora | 82.19 mi (132.27 km) |
| Avellino to Sorbolo | 349.18 mi (561.95 km) |
| Avellino to Soresina | 391.07 mi (629.36 km) |
| Avellino to Sorisole | 421.10 mi (677.70 km) |
| Avellino to Sorrento | 29.51 mi (47.49 km) |
| Avellino to Sorso | 324.65 mi (522.47 km) |
| Avellino to Sortino | 259.43 mi (417.51 km) |
| Avellino to Soverato Marina | 180.41 mi (290.34 km) |
| Avellino to Sovicille | 244.83 mi (394.02 km) |
| Avellino to Spello | 179.79 mi (289.34 km) |
