| Dumbarton to Sestu | 1,309.14 mi (2,106.86 km) |
| Dumbarton to Settimo Torinese | 920.01 mi (1,480.62 km) |
| Dumbarton to Seveso | 926.79 mi (1,491.53 km) |
| Dumbarton to Sezze | 1,274.00 mi (2,050.30 km) |
| Dumbarton to Siano | 1,360.42 mi (2,189.38 km) |
| Dumbarton to Siena | 1,120.44 mi (1,803.17 km) |
| Dumbarton to Signa | 1,087.27 mi (1,749.78 km) |
| Dumbarton to Silea | 1,018.75 mi (1,639.51 km) |
| Dumbarton to Silvi Paese | 1,243.90 mi (2,001.86 km) |
| Dumbarton to Sinalunga | 1,137.45 mi (1,830.55 km) |
| Dumbarton to Siniscola | 1,243.14 mi (2,000.65 km) |
| Dumbarton to Sinnai | 1,311.37 mi (2,110.45 km) |
| Dumbarton to Siracusa | 1,597.90 mi (2,571.58 km) |
| Dumbarton to Solaro | 926.93 mi (1,491.75 km) |
| Dumbarton to Soliera | 1,028.10 mi (1,654.58 km) |
