| Santo Tirso to Sestu | 933.98 mi (1,503.10 km) |
| Santo Tirso to Settimo Torinese | 856.57 mi (1,378.52 km) |
| Santo Tirso to Seveso | 929.06 mi (1,495.18 km) |
| Santo Tirso to Sezze | 1,112.90 mi (1,791.05 km) |
| Santo Tirso to Siano | 1,203.47 mi (1,936.80 km) |
| Santo Tirso to Siena | 1,018.15 mi (1,638.55 km) |
| Santo Tirso to Signa | 1,007.64 mi (1,621.64 km) |
| Santo Tirso to Silea | 1,079.23 mi (1,736.85 km) |
| Santo Tirso to Silvi Paese | 1,160.23 mi (1,867.21 km) |
| Santo Tirso to Sinalunga | 1,038.29 mi (1,670.97 km) |
| Santo Tirso to Siniscola | 947.50 mi (1,524.85 km) |
| Santo Tirso to Sinnai | 939.69 mi (1,512.29 km) |
| Santo Tirso to Siracusa | 1,301.10 mi (2,093.92 km) |
| Santo Tirso to Solaro | 926.11 mi (1,490.44 km) |
| Santo Tirso to Soliera | 1,004.52 mi (1,616.62 km) |
