| San Martin de Valdeiglesias to Sestu | 718.97 mi (1,157.07 km) |
| San Martin de Valdeiglesias to Settimo Torinese | 698.77 mi (1,124.56 km) |
| San Martin de Valdeiglesias to Seveso | 773.83 mi (1,245.35 km) |
| San Martin de Valdeiglesias to Sezze | 913.61 mi (1,470.31 km) |
| San Martin de Valdeiglesias to Siano | 1,000.48 mi (1,610.12 km) |
| San Martin de Valdeiglesias to Siena | 833.75 mi (1,341.78 km) |
| San Martin de Valdeiglesias to Signa | 827.92 mi (1,332.41 km) |
| San Martin de Valdeiglesias to Silea | 917.15 mi (1,476.01 km) |
| San Martin de Valdeiglesias to Silvi Paese | 968.70 mi (1,558.97 km) |
| San Martin de Valdeiglesias to Sinalunga | 852.74 mi (1,372.35 km) |
| San Martin de Valdeiglesias to Siniscola | 740.35 mi (1,191.48 km) |
| San Martin de Valdeiglesias to Sinnai | 724.79 mi (1,166.44 km) |
| San Martin de Valdeiglesias to Siracusa | 1,083.11 mi (1,743.10 km) |
| San Martin de Valdeiglesias to Solaro | 770.68 mi (1,240.28 km) |
| San Martin de Valdeiglesias to Soliera | 834.94 mi (1,343.70 km) |
