| Gourock to Sestu | 1,314.85 mi (2,116.05 km) |
| Gourock to Settimo Torinese | 926.59 mi (1,491.21 km) |
| Gourock to Seveso | 933.93 mi (1,503.02 km) |
| Gourock to Sezze | 1,281.16 mi (2,061.83 km) |
| Gourock to Siano | 1,367.80 mi (2,201.26 km) |
| Gourock to Siena | 1,127.57 mi (1,814.65 km) |
| Gourock to Signa | 1,094.45 mi (1,761.34 km) |
| Gourock to Silea | 1,026.65 mi (1,652.24 km) |
| Gourock to Silvi Paese | 1,251.50 mi (2,014.09 km) |
| Gourock to Sinalunga | 1,144.66 mi (1,842.15 km) |
| Gourock to Siniscola | 1,249.26 mi (2,010.49 km) |
| Gourock to Sinnai | 1,317.12 mi (2,119.69 km) |
| Gourock to Siracusa | 1,604.81 mi (2,582.69 km) |
| Gourock to Solaro | 934.05 mi (1,503.20 km) |
| Gourock to Soliera | 1,035.47 mi (1,666.44 km) |
