| Union to Sestu | 5,063.42 mi (8,148.79 km) |
| Union to Settimo Torinese | 4,775.45 mi (7,685.34 km) |
| Union to Seveso | 4,810.47 mi (7,741.70 km) |
| Union to Sezze | 5,138.41 mi (8,269.47 km) |
| Union to Siano | 5,234.70 mi (8,424.44 km) |
| Union to Siena | 4,991.92 mi (8,033.72 km) |
| Union to Signa | 4,963.53 mi (7,988.02 km) |
| Union to Silea | 4,934.14 mi (7,940.74 km) |
| Union to Silvi Paese | 5,136.09 mi (8,265.74 km) |
| Union to Sinalunga | 5,012.33 mi (8,066.57 km) |
| Union to Siniscola | 5,036.97 mi (8,106.23 km) |
| Union to Sinnai | 5,068.08 mi (8,156.29 km) |
| Union to Siracusa | 5,423.12 mi (8,727.66 km) |
| Union to Solaro | 4,809.46 mi (7,740.07 km) |
| Union to Soliera | 4,917.63 mi (7,914.16 km) |
