| Idanha-a-Nova to Sestu | 868.84 mi (1,398.26 km) |
| Idanha-a-Nova to Settimo Torinese | 842.83 mi (1,356.41 km) |
| Idanha-a-Nova to Seveso | 917.37 mi (1,476.36 km) |
| Idanha-a-Nova to Sezze | 1,066.36 mi (1,716.14 km) |
| Idanha-a-Nova to Siano | 1,153.08 mi (1,855.70 km) |
| Idanha-a-Nova to Siena | 985.05 mi (1,585.29 km) |
| Idanha-a-Nova to Signa | 978.33 mi (1,574.48 km) |
| Idanha-a-Nova to Silea | 1,063.29 mi (1,711.20 km) |
| Idanha-a-Nova to Silvi Paese | 1,121.08 mi (1,804.21 km) |
| Idanha-a-Nova to Sinalunga | 1,004.26 mi (1,616.20 km) |
| Idanha-a-Nova to Siniscola | 892.61 mi (1,436.52 km) |
| Idanha-a-Nova to Sinnai | 874.70 mi (1,407.69 km) |
| Idanha-a-Nova to Siracusa | 1,230.29 mi (1,979.96 km) |
| Idanha-a-Nova to Solaro | 914.27 mi (1,471.38 km) |
| Idanha-a-Nova to Soliera | 982.97 mi (1,581.93 km) |
