| Castel San Giorgio to Somma Lombardo | 453.44 mi (729.74 km) |
| Castel San Giorgio to Somma Vesuviana | 15.07 mi (24.26 km) |
| Castel San Giorgio to Sommacampagna | 373.37 mi (600.88 km) |
| Castel San Giorgio to Sona | 375.74 mi (604.70 km) |
| Castel San Giorgio to Sondrio | 443.82 mi (714.26 km) |
| Castel San Giorgio to Sora | 85.59 mi (137.74 km) |
| Castel San Giorgio to Sorbolo | 353.78 mi (569.35 km) |
| Castel San Giorgio to Soresina | 395.60 mi (636.66 km) |
| Castel San Giorgio to Sorisole | 425.92 mi (685.45 km) |
| Castel San Giorgio to Sorrento | 20.19 mi (32.50 km) |
| Castel San Giorgio to Sorso | 320.22 mi (515.35 km) |
| Castel San Giorgio to Sortino | 250.52 mi (403.18 km) |
| Castel San Giorgio to Soverato Marina | 175.25 mi (282.03 km) |
| Castel San Giorgio to Sovicille | 247.93 mi (399.00 km) |
| Castel San Giorgio to Spello | 184.66 mi (297.18 km) |
