| San Felice Circeo to Settimo Torinese | 380.11 mi (611.73 km) |
| San Felice Circeo to Seveso | 363.48 mi (584.96 km) |
| San Felice Circeo to Sezze | 18.35 mi (29.53 km) |
| San Felice Circeo to Siano | 88.55 mi (142.50 km) |
| San Felice Circeo to Siena | 169.84 mi (273.32 km) |
| San Felice Circeo to Signa | 203.27 mi (327.13 km) |
| San Felice Circeo to Silea | 307.96 mi (495.62 km) |
| San Felice Circeo to Silvi Paese | 104.92 mi (168.86 km) |
| San Felice Circeo to Sinalunga | 153.62 mi (247.22 km) |
| San Felice Circeo to Siniscola | 183.28 mi (294.96 km) |
| San Felice Circeo to Sinnai | 244.79 mi (393.96 km) |
| San Felice Circeo to Siracusa | 310.86 mi (500.27 km) |
| San Felice Circeo to Solaro | 363.34 mi (584.74 km) |
| San Felice Circeo to Soliera | 265.71 mi (427.62 km) |
| San Felice Circeo to Solofra | 95.56 mi (153.79 km) |
