| Rio Maior to Sestu | 961.93 mi (1,548.07 km) |
| Rio Maior to Settimo Torinese | 941.26 mi (1,514.81 km) |
| Rio Maior to Seveso | 1,015.66 mi (1,634.54 km) |
| Rio Maior to Sezze | 1,163.73 mi (1,872.84 km) |
| Rio Maior to Siano | 1,249.66 mi (2,011.13 km) |
| Rio Maior to Siena | 1,083.91 mi (1,744.39 km) |
| Rio Maior to Signa | 1,077.34 mi (1,733.81 km) |
| Rio Maior to Silea | 1,162.01 mi (1,870.07 km) |
| Rio Maior to Silvi Paese | 1,219.41 mi (1,962.45 km) |
| Rio Maior to Sinalunga | 1,103.06 mi (1,775.20 km) |
| Rio Maior to Siniscola | 988.57 mi (1,590.95 km) |
| Rio Maior to Sinnai | 967.82 mi (1,557.56 km) |
| Rio Maior to Siracusa | 1,320.38 mi (2,124.94 km) |
| Rio Maior to Solaro | 1,012.57 mi (1,629.58 km) |
| Rio Maior to Soliera | 1,081.94 mi (1,741.21 km) |
