| Ariano Irpino to Somma Lombardo | 447.82 mi (720.70 km) |
| Ariano Irpino to Somma Vesuviana | 39.12 mi (62.96 km) |
| Ariano Irpino to Sommacampagna | 362.62 mi (583.59 km) |
| Ariano Irpino to Sona | 364.94 mi (587.32 km) |
| Ariano Irpino to Sondrio | 433.61 mi (697.83 km) |
| Ariano Irpino to Sora | 85.63 mi (137.82 km) |
| Ariano Irpino to Sorbolo | 346.45 mi (557.55 km) |
| Ariano Irpino to Soresina | 388.38 mi (625.03 km) |
| Ariano Irpino to Sorisole | 417.66 mi (672.15 km) |
| Ariano Irpino to Sorrento | 52.07 mi (83.80 km) |
| Ariano Irpino to Sorso | 340.48 mi (547.95 km) |
| Ariano Irpino to Sortino | 275.43 mi (443.26 km) |
| Ariano Irpino to Soverato Marina | 187.36 mi (301.53 km) |
| Ariano Irpino to Sovicille | 246.11 mi (396.08 km) |
| Ariano Irpino to Spello | 177.35 mi (285.41 km) |
