| Idanha-a-Nova to Solofra | 1,161.04 mi (1,868.51 km) |
| Idanha-a-Nova to Somma Lombardo | 898.50 mi (1,445.99 km) |
| Idanha-a-Nova to Somma Vesuviana | 1,139.31 mi (1,833.55 km) |
| Idanha-a-Nova to Sommacampagna | 991.11 mi (1,595.03 km) |
| Idanha-a-Nova to Sona | 990.97 mi (1,594.81 km) |
| Idanha-a-Nova to Sondrio | 962.96 mi (1,549.73 km) |
| Idanha-a-Nova to Sora | 1,094.60 mi (1,761.59 km) |
| Idanha-a-Nova to Sorbolo | 962.13 mi (1,548.40 km) |
| Idanha-a-Nova to Soresina | 942.65 mi (1,517.05 km) |
| Idanha-a-Nova to Sorisole | 943.15 mi (1,517.85 km) |
| Idanha-a-Nova to Sorrento | 1,137.25 mi (1,830.22 km) |
| Idanha-a-Nova to Sorso | 833.52 mi (1,341.42 km) |
| Idanha-a-Nova to Sortino | 1,214.97 mi (1,955.31 km) |
| Idanha-a-Nova to Soverato Marina | 1,270.72 mi (2,045.02 km) |
| Idanha-a-Nova to Sovicille | 979.85 mi (1,576.91 km) |
