| Alliance to Sestu | 4,534.57 mi (7,297.68 km) |
| Alliance to Settimo Torinese | 4,261.13 mi (6,857.63 km) |
| Alliance to Seveso | 4,299.88 mi (6,919.98 km) |
| Alliance to Sezze | 4,621.10 mi (7,436.94 km) |
| Alliance to Siano | 4,718.03 mi (7,592.93 km) |
| Alliance to Siena | 4,477.26 mi (7,205.46 km) |
| Alliance to Signa | 4,449.94 mi (7,161.49 km) |
| Alliance to Silea | 4,428.62 mi (7,127.18 km) |
| Alliance to Silvi Paese | 4,623.58 mi (7,440.93 km) |
| Alliance to Sinalunga | 4,497.99 mi (7,238.82 km) |
| Alliance to Siniscola | 4,512.13 mi (7,261.57 km) |
| Alliance to Sinnai | 4,539.38 mi (7,305.42 km) |
| Alliance to Siracusa | 4,897.68 mi (7,882.05 km) |
| Alliance to Solaro | 4,298.69 mi (6,918.07 km) |
| Alliance to Soliera | 4,406.82 mi (7,092.08 km) |
