| Os to Sestu | 1,454.41 mi (2,340.64 km) |
| Os to Settimo Torinese | 1,047.11 mi (1,685.17 km) |
| Os to Seveso | 1,018.70 mi (1,639.45 km) |
| Os to Sezze | 1,333.51 mi (2,146.07 km) |
| Os to Siano | 1,398.74 mi (2,251.05 km) |
| Os to Siena | 1,193.66 mi (1,921.01 km) |
| Os to Signa | 1,160.03 mi (1,866.89 km) |
| Os to Silea | 1,044.80 mi (1,681.44 km) |
| Os to Silvi Paese | 1,274.38 mi (2,050.91 km) |
| Os to Sinalunga | 1,204.12 mi (1,937.85 km) |
| Os to Siniscola | 1,369.85 mi (2,204.56 km) |
| Os to Sinnai | 1,454.71 mi (2,341.13 km) |
| Os to Siracusa | 1,657.41 mi (2,667.35 km) |
| Os to Solaro | 1,020.33 mi (1,642.07 km) |
| Os to Soliera | 1,093.55 mi (1,759.90 km) |
