| San Martin de Valdeiglesias to Solofra | 1,008.43 mi (1,622.91 km) |
| San Martin de Valdeiglesias to Somma Lombardo | 755.63 mi (1,216.07 km) |
| San Martin de Valdeiglesias to Somma Vesuviana | 986.70 mi (1,587.93 km) |
| San Martin de Valdeiglesias to Sommacampagna | 845.14 mi (1,360.12 km) |
| San Martin de Valdeiglesias to Sona | 845.12 mi (1,360.09 km) |
| San Martin de Valdeiglesias to Sondrio | 820.71 mi (1,320.80 km) |
| San Martin de Valdeiglesias to Sora | 941.87 mi (1,515.79 km) |
| San Martin de Valdeiglesias to Sorbolo | 814.69 mi (1,311.11 km) |
| San Martin de Valdeiglesias to Soresina | 797.07 mi (1,282.76 km) |
| San Martin de Valdeiglesias to Sorisole | 799.43 mi (1,286.55 km) |
| San Martin de Valdeiglesias to Sorrento | 984.75 mi (1,584.81 km) |
| San Martin de Valdeiglesias to Sorso | 681.07 mi (1,096.08 km) |
| San Martin de Valdeiglesias to Sortino | 1,067.71 mi (1,718.32 km) |
| San Martin de Valdeiglesias to Soverato Marina | 1,119.98 mi (1,802.43 km) |
| San Martin de Valdeiglesias to Sovicille | 828.50 mi (1,333.34 km) |
