| San Felice Circeo to Somma Lombardo | 378.08 mi (608.46 km) |
| San Felice Circeo to Somma Vesuviana | 74.24 mi (119.48 km) |
| San Felice Circeo to Sommacampagna | 309.07 mi (497.40 km) |
| San Felice Circeo to Sona | 311.51 mi (501.32 km) |
| San Felice Circeo to Sondrio | 377.00 mi (606.73 km) |
| San Felice Circeo to Sora | 42.83 mi (68.92 km) |
| San Felice Circeo to Sorbolo | 283.01 mi (455.45 km) |
| San Felice Circeo to Soresina | 323.82 mi (521.14 km) |
| San Felice Circeo to Sorisole | 355.57 mi (572.23 km) |
| San Felice Circeo to Sorrento | 78.82 mi (126.84 km) |
| San Felice Circeo to Sorso | 237.45 mi (382.14 km) |
| San Felice Circeo to Sortino | 299.62 mi (482.20 km) |
| San Felice Circeo to Soverato Marina | 254.04 mi (408.84 km) |
| San Felice Circeo to Sovicille | 170.55 mi (274.48 km) |
| San Felice Circeo to Spello | 123.09 mi (198.09 km) |
