| Gourock to Solofra | 1,370.53 mi (2,205.66 km) |
| Gourock to Somma Lombardo | 919.57 mi (1,479.90 km) |
| Gourock to Somma Vesuviana | 1,356.35 mi (2,182.84 km) |
| Gourock to Sommacampagna | 996.62 mi (1,603.90 km) |
| Gourock to Sona | 994.30 mi (1,600.17 km) |
| Gourock to Sondrio | 925.68 mi (1,489.73 km) |
| Gourock to Sora | 1,284.21 mi (2,066.74 km) |
| Gourock to Sorbolo | 1,015.78 mi (1,634.73 km) |
| Gourock to Soresina | 974.24 mi (1,567.89 km) |
| Gourock to Sorisole | 943.32 mi (1,518.13 km) |
| Gourock to Sorrento | 1,368.70 mi (2,202.71 km) |
| Gourock to Sorso | 1,209.47 mi (1,946.46 km) |
| Gourock to Sortino | 1,592.10 mi (2,562.25 km) |
| Gourock to Soverato Marina | 1,544.28 mi (2,485.28 km) |
| Gourock to Sovicille | 1,126.86 mi (1,813.51 km) |
